配置方式

每個starter都有自己預設的配置，如果需要改變預設值，可以在其他地方配置來覆蓋掉預設的值，覆蓋預設的配置有多種方式，每種方式的優先順序也不同，如果在多個地方配置則優先使用優先順序高的值，其中命令列引數優先順序最高, 其中大部分引數一般都配置在屬性檔案application.properties中，屬性檔案即可以覆蓋starter中預設的值，也可以自定義值

1. 在命令列行輸入的引數
2. SPRING_APPLICATION_JSON中的屬性。SPRING_APPLICATION_JSON是以json格式配置在系統環境變數中的內容
3. java:comp/env 裡的 JNDI 屬性
4. Java的系統屬性，可以通過System.getProperties()獲得的內容
5. 作業系統環境變數
6. RandomValuePropertySource屬性類生成的random.*屬性
7. 位於當前應用jar包之外，針對不同的profile換將的配置檔案內容，例如application-{profile}.properties或者yaml定義的配置檔案
8. 位於當前應用jar包之內，針對不同的profile換將的配置檔案內容，例如application-{profile}.properties或者yaml定義的配置檔案
9. 位於當前應用jar包之外的application.properties和yaml配置內容
10. 位於當前應用jar包之內的application.properties和yaml配置內容
11. 在應用@Configuration配置類中，用@PropertySource註解宣告的屬性檔案
12. 應用預設屬性，SpringApplication.setDefaultProperties宣告的預設屬性

命令列方式

# 通過使用--server.port屬性來設定xxx.jar應用的埠為8888, 
# --debug啟動除錯模式，會列印更多日誌
java -jar xxx.jar --server.port=8888 --debug

應用程式屬性檔案: application.properties

starter中的配置

debug=true

spring.profiles
 
.active=dev
spring.application.name: xxx
server.port=8080

spring.mvc.view.prefix=/templates/
spring.mvc.view.suffix=.ftl

logging.file=qingyun-api
logging.path=./logs/${spring.application.name}
logging.config=classpath:logback.xml
logging.level.xxx=DEBUG

自定義屬性

author.name=mengday
author.email[email protected].com
contact.information=請聯絡${author.name},郵箱：${author.email}

在配置檔案中，可以通過${key}來相互引用，key可以在當前屬性檔案中也可以在其他屬性檔案中。

注意:application.properties 配置中文值的時候，讀取出來的屬性值會出現亂碼問題。
但是application.yml不會出現亂碼問題。原因是，Spring Boot 是以iso-8859的編碼方式讀取 application.properties配置檔案。

Spring可以通過註解@Value(“${屬性名}”)來載入對應的配置屬性，然後將屬性值賦值給註解對應的實體屬性。

@Component
public class AuthorProperties {
    @Value("${author.name}")
    private String name;

    @Value("${author.email}")
    private String email;

    @Value("${contact.information}")
    private String contact;
    // Getter & Setter   
}

在配置檔案中也可以通過random.*來呼叫RandomValuePropertySource#getRandomValue(String type)方法來隨機生成一個值，注意：隨機的key不能以random開頭，如random.a是有問題的

# 隨機int
test.a=${random.int}
# 10以內的隨機數
test.b=${random.int(10)}
# 10-20的隨機數
test.c=${random.int[10,20]}
# 隨機long
test.d=${random.long}
# 隨機字串
test.value=${random.value}
# uuid
test.uuid=${random.uuid}

@ConfigurationProperties(prefix = “xxx”): 配置屬性註解，可以指定一個屬性的字首，將配置檔案中的key為prefix.屬性名的值賦值給對應的屬性，這種方式適用於字首相同的一組值，這樣就不用再為每個屬性配置@Value(“${prefix.field}”)了

@Component
@ConfigurationProperties(prefix = "test")
public class RandomProperties {
    private Integer a;
    private Integer b;
    private Integer c;
    private long d;
    private String value;
    private String uuid;
    // Getter & Setter
}    

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {

    @Autowired
    private AuthorProperties authorProperties;

    @Autowired
    private RandomProperties randomProperties;

    @Test
    public void testProperties(){
        Assert.assertEquals(authorProperties.getName(), "mengday");
        Assert.assertEquals(authorProperties.getEmail(), "[email protected]");
        System.out.println(authorProperties.getContact());
        System.out.println(randomProperties.toString());
    }
}

自定義配置檔案

application.properties雖然也可以定義非starter中的配置，即定義自己的配置，如果把自己的配置也放到這個檔案中可能會使得檔案很臃腫，可以將自己的配置放在其他屬性檔案中，這樣配置更加集中

在resources中的根目錄建立一個test.properties檔案

app.key=hello
app.secret=123456

使用@PropertySource來定義屬性檔案的位置

@Component
@ConfigurationProperties(prefix = "app")
@PropertySource("classpath:test.properties")
public class AppProperties {
    private String key;
    private String secret;
}

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {
    @Autowired
    private AppProperties appProperties;

    @Test
    public void testProperties(){
        System.out.println(appProperties.toString());
    }
}   

環境切換

專案中經常有一些引數環境的不同而配置不同的值，如開發環境的資料庫配置資訊和生產環境的資料庫配置資訊是不同的，為了了方便環境之間的簡單的切換，可以通過profile來實現， Spring Boot中多環境配置檔名需要滿足application-{profile}.properties的格式，其中{profile}對應你的環境標識，比如：

• application-dev.properties：開發環境
• application-test.properties：測試環境
• application-prod.properties：生產環境

至於哪個具體的配置檔案會被載入，需要在application.properties檔案中通過spring.profiles.active屬性來設定，其值對應{profile}值。

如：spring.profiles.active=test就會載入application-test.properties配置檔案內容
java -jar xxx.jar –spring.profiles.active=test

實際開發中通常在application.properties中配置通用內容，並設定spring.profiles.active=dev，以開發環境為預設配置，application-{profile}.properties中配置各個環境不同的內容，可以通過命令列方式去啟用不同環境的配置。

使用profile可以方便的切換環境，但是也有缺點，如果把生產環境配置到application-prod.properties中，那麼開發人員就能輕易的看到這個檔案，application-prod.properties 這個檔案的配置如資料庫密碼等都是非常敏感的配置，如果隨意讓每個開發人員都能看到那豈不是非常不安全，更可怕的是開發人員如果把密碼洩露出去，那後果無法想象。在配置檔案的載入順序中第7、9條允許使用應用程式之外的配置檔案:application-{profile}.properties和application.properties,其中應用程式jar包之外的配置檔案的優先順序高於應用程式之內的配置檔案，由於spring boot提供了應用程式之外的配置，這就形成了在專案中配置開發和測試環境的配置，而生產配置放到外部地方(如git)對程式設計師不可見，保證其安全 ，這就是Spring Cloud 中的Config功能。

運維在生產環境上部署啟動時，使用java -jar spring.profiles.active=prod, 這樣直接載入應用程式之外的application-prod.properties檔案，而此檔案是開發人員看不到的，這樣就保證了生產環境配置的安全性

常用應用程式屬性

# ===================================================================
# COMMON SPRING BOOT PROPERTIES
#
# This sample file is provided as a guideline. Do NOT copy it in its
# entirety to your own application.            ^^^
# ===================================================================


# ----------------------------------------
# CORE PROPERTIES
# ----------------------------------------
debug=false # Enable debug logs.
trace=false # Enable trace logs.

# LOGGING
logging.config= # Location of the logging configuration file. For instance, `classpath:logback.xml` for Logback.
logging.exception-conversion-word=%wEx # Conversion word used when logging exceptions.
logging.file= # Log file name (for instance, `myapp.log`). Names can be an exact location or relative to the current directory.
logging.file.max-history=0 # Maximum of archive log files to keep. Only supported with the default logback setup.
logging.file.max-size=10MB # Maximum log file size. Only supported with the default logback setup.
logging.level.*= # Log levels severity mapping. For instance, `logging.level.org.springframework=DEBUG`.
logging.path= # Location of the log file. For instance, `/var/log`.
logging.pattern.console= # Appender pattern for output to the console. Supported only with the default Logback setup.
logging.pattern.dateformat=yyyy-MM-dd HH:mm:ss.SSS # Appender pattern for log date format. Supported only with the default Logback setup.
logging.pattern.file= # Appender pattern for output to a file. Supported only with the default Logback setup.
logging.pattern.level=%5p # Appender pattern for log level. Supported only with the default Logback setup.
logging.register-shutdown-hook=false # Register a shutdown hook for the logging system when it is initialized.

# AOP
spring.aop.auto=true # Add @EnableAspectJAutoProxy.
spring.aop.proxy-target-class=true # Whether subclass-based (CGLIB) proxies are to be created (true), as opposed to standard Java interface-based proxies (false).

# IDENTITY (ContextIdApplicationContextInitializer)
spring.application.name= # Application name.

# ADMIN (SpringApplicationAdminJmxAutoConfiguration)
spring.application.admin.enabled=false # Whether to enable admin features for the application.
spring.application.admin.jmx-name=org.springframework.boot:type=Admin,name=SpringApplication # JMX name of the application admin MBean.

# AUTO-CONFIGURATION
spring.autoconfigure.exclude= # Auto-configuration classes to exclude.

# BANNER
spring.banner.charset=UTF-8 # Banner file encoding.
spring.banner.location=classpath:banner.txt # Banner text resource location.
spring.banner.image.location=classpath:banner.gif # Banner image file location (jpg or png can also be used).
spring.banner.image.width=76 # Width of the banner image in chars.
spring.banner.image.height= # Height of the banner image in chars (default based on image height).
spring.banner.image.margin=2 # Left hand image margin in chars.
spring.banner.image.invert=false # Whether images should be inverted for dark terminal themes.

# SPRING CORE
spring.beaninfo.ignore=true # Whether to skip search of BeanInfo classes.

# SPRING CACHE (CacheProperties)
spring.cache.cache-names= # Comma-separated list of cache names to create if supported by the underlying cache manager.
spring.cache.caffeine.spec= # The spec to use to create caches. See CaffeineSpec for more details on the spec format.
spring.cache.couchbase.expiration=0ms # Entry expiration. By default the entries never expire. Note that this value is ultimately converted to seconds.
spring.cache.ehcache.config= # The location of the configuration file to use to initialize EhCache.
spring.cache.infinispan.config= # The location of the configuration file to use to initialize Infinispan.
spring.cache.jcache.config= # The location of the configuration file to use to initialize the cache manager.
spring.cache.jcache.provider= # Fully qualified name of the CachingProvider implementation to use to retrieve the JSR-107 compliant cache manager. Needed only if more than one JSR-107 implementation is available on the classpath.
spring.cache.redis.cache-null-values=true # Allow caching null values.
spring.cache.redis.key-prefix= # Key prefix.
spring.cache.redis.time-to-live=0ms # Entry expiration. By default the entries never expire.
spring.cache.redis.use-key-prefix=true # Whether to use the key prefix when writing to Redis.
spring.cache.type= # Cache type. By default, auto-detected according to the environment.

# SPRING CONFIG - using environment property only (ConfigFileApplicationListener)
spring.config.additional-location= # Config file locations used in addition to the defaults.
spring.config.location= # Config file locations that replace the defaults.
spring.config.name=application # Config file name.

# HAZELCAST (HazelcastProperties)
spring.hazelcast.config= # The location of the configuration file to use to initialize Hazelcast.

# PROJECT INFORMATION (ProjectInfoProperties)
spring.info.build.location=classpath:META-INF/build-info.properties # Location of the generated build-info.properties file.
spring.info.git.location=classpath:git.properties # Location of the generated git.properties file.

# JMX
spring.jmx.default-domain= # JMX domain name.
spring.jmx.enabled=true # Expose management beans to the JMX domain.
spring.jmx.server=mbeanServer # MBeanServer bean name.

# Email (MailProperties)
spring.mail.default-encoding=UTF-8 # Default MimeMessage encoding.
spring.mail.host= # SMTP server host. For instance, `smtp.example.com`.
spring.mail.jndi-name= # Session JNDI name. When set, takes precedence over other mail settings.
spring.mail.password= # Login password of the SMTP server.
spring.mail.port= # SMTP server port.
spring.mail.properties.*= # Additional JavaMail session properties.
spring.mail.protocol=smtp # Protocol used by the SMTP server.
spring.mail.test-connection=false # Whether to test that the mail server is available on startup.
spring.mail.username= # Login user of the SMTP server.

# APPLICATION SETTINGS (SpringApplication)
spring.main.banner-mode=console # Mode used to display the banner when the application runs.
spring.main.sources= # Sources (class names, package names, or XML resource locations) to include in the ApplicationContext.
spring.main.web-application-type= # Flag to explicitly request a specific type of web application. If not set, auto-detected based on the classpath.

# FILE ENCODING (FileEncodingApplicationListener)
spring.mandatory-file-encoding= # Expected character encoding the application must use.

# INTERNATIONALIZATION (MessageSourceProperties)
spring.messages.always-use-message-format=false # Whether to always apply the MessageFormat rules, parsing even messages without arguments.
spring.messages.basename=messages # Comma-separated list of basenames (essentially a fully-qualified classpath location), each following the ResourceBundle convention with relaxed support for slash based locations.
spring.messages.cache-duration= # Loaded resource bundle files cache duration. When not set, bundles are cached forever. If a duration suffix is not specified, seconds will be used.
spring.messages.encoding=UTF-8 # Message bundles encoding.
spring.messages.fallback-to-system-locale=true # Whether to fall back to the system Locale if no files for a specific Locale have been found.
spring.messages.use-code-as-default-message=false # Whether to use the message code as the default message instead of throwing a "NoSuchMessageException". Recommended during development only.

# OUTPUT
spring.output.ansi.enabled=detect # Configures the ANSI output.

# PID FILE (ApplicationPidFileWriter)
spring.pid.fail-on-write-error= # Fails if ApplicationPidFileWriter is used but it cannot write the PID file.
spring.pid.file= # Location of the PID file to write (if ApplicationPidFileWriter is used).

# PROFILES
spring.profiles.active= # Comma-separated list of active profiles. Can be overridden by a command line switch.
spring.profiles.include= # Unconditionally activate the specified comma-separated list of profiles (or list of profiles if using YAML).

# QUARTZ SCHEDULER (QuartzProperties)
spring.quartz.jdbc.initialize-schema=embedded # Database schema initialization mode.
spring.quartz.jdbc.schema=classpath:org/quartz/impl/jdbcjobstore/[email protected]@[email protected]@.sql # Path to the SQL file to use to initialize the database schema.
spring.quartz.job-store-type=memory # Quartz job store type.
spring.quartz.properties.*= # Additional Quartz Scheduler properties.

# REACTOR (ReactorCoreProperties)
spring.reactor.stacktrace-mode.enabled=false # Whether Reactor should collect stacktrace information at runtime.

# SENDGRID (SendGridAutoConfiguration)
spring.sendgrid.api-key= # SendGrid API key.
spring.sendgrid.proxy.host= # SendGrid proxy host.
spring.sendgrid.proxy.port= # SendGrid proxy port.


# ----------------------------------------
# WEB PROPERTIES
# ----------------------------------------

# EMBEDDED SERVER CONFIGURATION (ServerProperties)
server.address= # Network address to which the server should bind.
server.compression.enabled=false # Whether response compression is enabled.
server.compression.excluded-user-agents= # List of user-agents to exclude from compression.
server.compression.mime-types=text/html,text/xml,text/plain,text/css,text/javascript,application/javascript # Comma-separated list of MIME types that should be compressed.
server.compression.min-response-size=2048 # Minimum "Content-Length" value that is required for compression to be performed.
server.connection-timeout= # Time that connectors wait for another HTTP request before closing the connection. When not set, the connector's container-specific default is used. Use a value of -1 to indicate no (that is, an infinite) timeout.
server.error.include-exception=false # Include the "exception" attribute.
server.error.include-stacktrace=never # When to include a "stacktrace" attribute.
server.error.path=/error # Path of the error controller.
server.error.whitelabel.enabled=true # Whether to enable the default error page displayed in browsers in case of a server error.
server.http2.enabled=false # Whether to enable HTTP/2 support, if the current environment supports it.
server.jetty.acceptors= # Number of acceptor threads to use.
server.jetty.accesslog.append=false # Append to log.
server.jetty.accesslog.date-format=dd/MMM/yyyy:HH:mm:ss Z # Timestamp format of the request log.
server.jetty.accesslog.enabled=false # Enable access log.
server.jetty.accesslog.extended-format=false # Enable extended NCSA format.
server.jetty.accesslog.file-date-format= # Date format to place in log file name.
server.jetty.accesslog.filename= # Log filename. If not specified, logs redirect to "System.err".
server.jetty.accesslog.locale= # Locale of the request log.
server.jetty.accesslog.log-cookies=false # Enable logging of the request cookies.
server.jetty.accesslog.log-latency=false # Enable logging of request processing time.
server.jetty.accesslog.log-server=false # Enable logging of the request hostname.
server.jetty.accesslog.retention-period=31 # Number of days before rotated log files are deleted.
server.jetty.accesslog.time-zone=GMT # Timezone of the request log.
server.jetty.max-http-post-size=0 # Maximum size, in bytes, of the HTTP post or put content.
server.jetty.selectors= # Number of selector threads to use.
server.max-http-header-size=0 # Maximum size, in bytes, of the HTTP message header.
server.port=8080 # Server HTTP port.
server.server-header= # Value to use for the Server response header (if empty, no header is sent).
server.use-forward-headers= # Whether X-Forwarded-* headers should be applied to the HttpRequest.
server.servlet.context-parameters.*= # Servlet context init parameters.
server.servlet.context-path= # Context path of the application.
server.servlet.application-display-name=application # Display name of the application.
server.servlet.jsp.class-name=org.apache.jasper.servlet.JspServlet # The class name of the JSP servlet.
server.servlet.jsp.init-parameters.*= # Init parameters used to configure the JSP servlet.
server.servlet.jsp.registered=true # Whether the JSP servlet is registered.
server.servlet.path=/ # Path of the main dispatcher servlet.
server.servlet.session.cookie.comment= # Comment for the session cookie.
server.servlet.session.cookie.domain= # Domain for the session cookie.
server.servlet.session.cookie.http-only= # "HttpOnly" flag for the session cookie.
server.servlet.session.cookie.max-age= # Maximum age of the session cookie. If a duration suffix is not specified, seconds will be used.
server.servlet.session.cookie.name= # Session cookie name.
server.servlet.session.cookie.path= # Path of the session cookie.
server.servlet.session.cookie.secure= # "Secure" flag for the session cookie.
server.servlet.session.persistent=false # Whether to persist session data between restarts.
server.servlet.session.store-dir= # Directory used to store session data.
server.servlet.session.timeout= # Session timeout. If a duration suffix is not specified, seconds will be used.
server.servlet.session.tracking-modes= # Session tracking modes (one or more of the following: "cookie", "url", "ssl").
server.ssl.ciphers= # Supported SSL ciphers.
server.ssl.client-auth= # Whether client authentication is wanted ("want") or needed ("need"). Requires a trust store.
server.ssl.enabled= # Enable SSL support.
server.ssl.enabled-protocols= # Enabled SSL protocols.
server.ssl.key-alias= # Alias that identifies the key in the key store.
server.ssl.key-password= # Password used to access the key in the key store.
server.ssl.key-store= # Path to the key store that holds the SSL certificate (typically a jks file).
server.ssl.key-store-password= # Password used to access the key store.
server.ssl.key-store-provider= # Provider for the key store.
server.ssl.key-store-type= # Type of the key store.
server.ssl.protocol=TLS # SSL protocol to use.
server.ssl.trust-store= # Trust store that holds SSL certificates.
server.ssl.trust-store-password= # Password used to access the trust store.
server.ssl.trust-store-provider= # Provider for the trust store.
server.ssl.trust-store-type= # Type of the trust store.
server.tomcat.accept-count=0 # Maximum queue length for incoming connection requests when all possible request processing threads are in use.
server.tomcat.accesslog.buffered=true # Whether to buffer output such that it is flushed only periodically.
server.tomcat.accesslog.directory=logs # Directory in which log files are created. Can be absolute or relative to the Tomcat base dir.
server.tomcat.accesslog.enabled=false # Enable access log.
server.tomcat.accesslog.file-date-format=.yyyy-MM-dd # Date format to place in the log file name.
server.tomcat.accesslog.pattern=common # Format pattern for access logs.
server.tomcat.accesslog.prefix=access_log # Log file name prefix.
server.tomcat.accesslog.rename-on-rotate=false # Whether to defer inclusion of the date stamp in the file name until rotate time.
server.tomcat.accesslog.request-attributes-enabled=false # Set request attributes for the IP address, Hostname, protocol, and port used for the request.
server.tomcat.accesslog.rotate=true # Whether to enable access log rotation.
server.tomcat.accesslog.suffix=.log # Log file name suffix.
server.tomcat.additional-tld-skip-patterns= # Comma-separated list of additional patterns that match jars to ignore for TLD scanning.
server.tomcat.background-processor-delay=30s # Delay between the invocation of backgroundProcess methods. If a duration suffix is not specified, seconds will be used.
server.tomcat.basedir= # Tomcat base directory. If not specified, a temporary directory is used.
server.tomcat.internal-proxies=10\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|\\
        192\\.168\\.\\d{1,3}\\.\\d{1,3}|\\
        169\\.254\\.\\d{1,3}\\.\\d{1,3}|\\
        127\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|\\
        172\\.1[6-9]{1}\\.\\d{1,3}\\.\\d{1,3}|\\
        172\\.2[0-9]{1}\\.\\d{1,3}\\.\\d{1,3}|\\
        172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3} # Regular expression matching trusted IP addresses.
server.tomcat.max-connections=0 # Maximum number of connections that the server accepts and processes at any given time.
server.tomcat.max-http-header-size=0 # Maximum size, in bytes, of the HTTP message header.
server.tomcat.max-http-post-size=0 # Maximum size, in bytes, of the HTTP post content.
server.tomcat.max-threads=0 # Maximum number of worker threads.
server.tomcat.min-spare-threads=0 # Minimum number of worker threads.
server.tomcat.port-header=X-Forwarded-Port # Name of the HTTP header used to override the original port value.
server.tomcat.protocol-header= # Header that holds the incoming protocol, usually named "X-Forwarded-Proto".
server.tomcat.protocol-header-https-value=https # Value of the protocol header indicating whether the incoming request uses SSL.
server.tomcat.redirect-context-root= # Whether requests to the context root should be redirected by appending a / to the path.
server.tomcat.remote-ip-header= # Name of the HTTP header from which the remote IP is extracted. For instance, `X-FORWARDED-FOR`.
server.tomcat.resource.cache-ttl= # Time-to-live of the static resource cache.
server.tomcat.uri-encoding=UTF-8 # Character encoding to use to decode the URI.
server.tomcat.use-relative-redirects= # Whether HTTP 1.1 and later location headers generated by a call to sendRedirect will use relative or absolute redirects.
server.undertow.accesslog.dir= # Undertow access log directory.
server.undertow.accesslog.enabled=false # Whether to enable the access log.
server.undertow.accesslog.pattern=common # Format pattern for access logs.
server.undertow.accesslog.prefix=access_log. # Log file name prefix.
server.undertow.accesslog.rotate=true # Whether to enable access log rotation.
server.undertow.accesslog.suffix=log # Log file name suffix.
server.undertow.buffer-size= # Size of each buffer, in bytes.
server.undertow.direct-buffers= # Whether to allocate buffers outside the Java heap.
server.undertow.io-threads= # Number of I/O threads to create for the worker.
server.undertow.eager-filter-init=true # Whether servlet filters should be initialized on startup.
server.undertow.max-http-post-size=0 # Maximum size, in bytes, of the HTTP post content.
server.undertow.worker-threads= # Number of worker threads.

# FREEMARKER (FreeMarkerProperties)
spring.freemarker.allow-request-override=false # Whether HttpServletRequest attributes are allowed to override (hide) controller generated model attributes of the same name.
spring.freemarker.allow-session-override=false # Whether HttpSession attributes are allowed to override (hide) controller generated model attributes of the same name.
spring.freemarker.cache=false # Whether to enable template caching.
spring.freemarker.charset=UTF-8 # Template encoding.
spring.freemarker.check-template-location=true # Whether to check that the templates location exists.
spring.freemarker.content-type=text/html # Content-Type value.
spring.freemarker.enabled=true # Whether to enable MVC view resolution for this technology.
spring.freemarker.expose-request-attributes=false # Whether all request attributes should be added to the model prior to merging with the template.
spring.freemarker.expose-session-attributes=false # Whether all HttpSession attributes should be added to the model prior to merging with the template.
spring.freemarker.expose-spring-macro-helpers=true # Whether to expose a RequestContext for use by Spring's macro library, under the name "springMacroRequestContext".
spring.freemarker.prefer-file-system-access=true # Whether to prefer file system access for template loading. File system access enables hot detection of template changes.
spring.freemarker.prefix= # Prefix that gets prepended to view names when building a URL.
spring.freemarker.request-context-attribute= # Name of the RequestContext attribute for all views.
spring.freemarker.settings.*= # Well-known FreeMarker keys which are passed to FreeMarker's Configuration.
spring.freemarker.suffix=.ftl # Suffix that gets appended to view names when building a URL.
spring.freemarker.template-loader-path=classpath:/templates/ # Comma-separated list of template paths.
spring.freemarker.view-names= # White list of view names that can be resolved.

# GROOVY TEMPLATES (GroovyTemplateProperties)
spring.groovy.template.allow-request-override=false # Whether HttpServletRequest attributes are allowed to override (hide) controller generated model attributes of the same name.
spring.groovy.template.allow-session-override=false # Whether HttpSession attributes are allowed to override (hide) controller generated model attributes of the same name.
spring.groovy.template.cache=false # Whether to enable template caching.
spring.groovy.template.charset=UTF-8 # Template encoding.
spring.groovy.template.check-template-location=true # Whether to check that the templates location exists.
spring.groovy.template.configuration.*= # See GroovyMarkupConfigurer
spring.groovy.template.content-type=text/html # Content-Type value.
spring.groovy.template.enabled=true # Whether to enable MVC view resolution for this technology.
spring.groovy.template.expose-request-attributes=false # Whether all request attributes should be added to the model prior to merging with the template.
spring.groovy.template.expose-session-attributes=false # Whether all HttpSession attributes should be added to the model prior to merging with the template.
spring.groovy.template.expose-spring-macro-helpers=true # Whether to expose a RequestContext for use by Spring's macro library, under the name "springMacroRequestContext".
spring.groovy.template.prefix= # Prefix that gets prepended to view names when building a URL.
spring.groovy.template.request-context-attribute= # Name of the RequestContext attribute for all views.
spring.groovy.template.resource-loader-path=classpath:/templates/ # Template path.
spring.groovy.template.suffix=.tpl # Suffix that gets appended to view names when building a URL.
spring.groovy.template.view-names= # White list of view names that can be resolved.

# SPRING HATEOAS (HateoasProperties)
spring.hateoas.use-hal-as-default-json-media-type=true # Whether application/hal+json responses should be sent to requests that accept application/json.

# HTTP message conversion
spring.http.converters.preferred-json-mapper= # Preferred JSON mapper to use for HTTP message conversion. By default, auto-detected according to the environment.

# HTTP encoding (HttpEncodingProperties)
spring.http.encoding.charset=UTF-8 # Charset of HTTP requests and responses. Added to the "Content-Type" header if not set explicitly.
spring.http.encoding.enabled=true # Whether to enable http encoding support.
spring.http.encoding.force= # Whether to force the encoding to the configured charset on HTTP requests and responses.
spring.http.encoding.force-request= # Whether to force the encoding to the configured charset on HTTP requests. Defaults to true when "force" has not been specified.
spring.http.encoding.force-response= # Whether to force the encoding to the configured charset on HTTP responses.
spring.http.encoding.mapping= # Locale in which to encode mapping.

# MULTIPART (MultipartProperties)
spring.servlet.multipart.enabled=true # Whether to enable support of multipart uploads.
spring.servlet.multipart.file-size-threshold=0 # Threshold after which files are written to disk. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.
spring.servlet.multipart.location= # Intermediate location of uploaded files.
spring.servlet.multipart.max-file-size=1MB # Max file size. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.
spring.servlet.multipart.max-request-size=10MB # Max request size. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.
spring.servlet.multipart.resolve-lazily=false # Whether to resolve the multipart request lazily at the time of file or parameter access.

# JACKSON (JacksonProperties)
spring.jackson.date-format= # Date format string or a fully-qualified date format class name. For instance, `yyyy-MM-dd HH:mm:ss`.
spring.jackson.default-property-inclusion= # Controls the inclusion of properties during serialization. Configured with one of the values in Jackson's JsonInclude.Include enumeration.
spring.jackson.deserialization.*= # Jackson on/off features that affect the way Java objects are deserialized.
spring.jackson.generator.*= # Jackson on/off features for generators.
spring.jackson.joda-date-time-format= # Joda date time format string. If not configured, "date-format" is used as a fallback if it is configured with a format string.
spring.jackson.locale= # Locale used for formatting.
spring.jackson.mapper.*= # Jackson general purpose on/off features.
spring.jackson.parser.*= # Jackson on/off features for parsers.
spring.jackson.property-naming-strategy= # One of the constants on Jackson's PropertyNamingStrategy. Can also be a fully-qualified class name of a PropertyNamingStrategy subclass.
spring.jackson.serialization.*= # Jackson on/off features that affect the way Java objects are serialized.
spring.jackson.time-zone= #  Time zone used when formatting dates. For instance, "America/Los_Angeles" or "GMT+10".

# GSON (GsonProperties)
spring.gson.date-format= # Format to use when serializing Date objects.
spring.gson.disable-html-escaping= # Whether to disable the escaping of HTML characters such as '<', '>', etc.
spring.gson.disable-inner-class-serialization= # Whether to exclude inner classes during serialization.
spring.gson.enable-complex-map-key-serialization= # Whether to enable serialization of complex map keys (i.e. non-primitives).
spring.gson.exclude-fields-without-expose-annotation= # Whether to exclude all fields from consideration for serialization or deserialization that do not have the "Expose" annotation.
spring.gson.field-naming-policy= # Naming policy that should be applied to an object's field during serialization and deserialization.
spring.gson.generate-non-executable-json= # Whether to generate non executable JSON by prefixing the output with some special text.
spring.gson.lenient= # Whether to be lenient about parsing JSON that doesn't conform to RFC 4627.
spring.gson.long-serialization-policy= # Serialization policy for Long and long types.
spring.gson.pretty-printing= # Whether to output serialized JSON that fits in a page for pretty printing.
spring.gson.serialize-nulls= # Whether to serialize null fields.

# JERSEY (JerseyProperties)
spring.jersey.application-path= # Path that serves as the base URI for the application. If specified, overrides the value of "@ApplicationPath".
spring.jersey.filter.order=0 # Jersey filter chain order.
spring.jersey.init.*= # Init parameters to pass to Jersey through the servlet or filter.
spring.jersey.servlet.load-on-startup=-1 # Load on startup priority of the Jersey servlet.
spring.jersey.type=servlet # Jersey integration type.

# SPRING LDAP (LdapProperties)
spring.ldap.anonymous-read-only=false # Whether read-only operations should use an anonymous environment.
spring.ldap.base= # Base suffix from which all operations should originate.
spring.ldap.base-environment.*= # LDAP specification settings.
spring.ldap.password= # Login password of the server.
spring.ldap.urls= # LDAP URLs of the server.
spring.ldap.username= # Login username of the server.

# EMBEDDED LDAP (EmbeddedLdapProperties)
spring.ldap.embedded.base-dn= # List of base DNs.
spring.ldap.embedded.credential.username= # Embedded LDAP username.
spring.ldap.embedded.credential.password= # Embedded LDAP password.
spring.ldap.embedded.ldif=classpath:schema.ldif # Schema (LDIF) script resource reference.
spring.ldap.embedded.port=0 # Embedded LDAP port.
spring.ldap.embedded.validation.enabled=true # Whether to enable LDAP schema validation.
spring.ldap.embedded.validation.schema= # Path to