1、用intellij idea2018搭建ssm框架：SpringMVC+Spring+Mybatis
阿新 • • 發佈：2018-12-11
開發環境：
intellij idea：2018 + maven：3.5.4+ jdk：1.8
下面正式開始配置過程
1、新建專案
2、專案目錄結構如下（三張圖連著看），檔案內容往下看
目錄顏色不同看步驟3
3、讓idea識別目錄作用
file----project structure-----modelues
main包下面的java對應Sources，resources對應上面的Resources
test是測試，對應上面的Test Resources
設定之後顏色就跟步驟2的目錄顏色一樣了
3、pom.xml
直接複製檔案到pom.xml中，然後maven會自動下載需要的jar包
（複製檔案之後，右下角會提示選中第二個自動下載就好了）
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.ssm</groupId> <artifactId>ssm</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>ChatRobot Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <!-- 設定專案編碼編碼 --> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <!-- spring版本號 --> <spring.version>4.3.5.RELEASE</spring.version> <!-- mybatis版本號 --> <mybatis.version>3.4.1</mybatis.version> </properties> <dependencies> <!-- java ee --> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> </dependency> <!-- 單元測試 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!-- 實現slf4j介面並整合 --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.2.2</version> </dependency> <!-- JSON --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.8.7</version> </dependency> <!-- 資料庫 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.41</version> <scope>runtime</scope> </dependency> <!-- 資料庫連線池 --> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency> <!-- MyBatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!-- mybatis/spring整合包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <!-- Spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> </dependencies> <build> <finalName>ChatRobot</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <!-- 設定JDK版本 --> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> </project>
4、logback.xml
<?xml version="1.0" encoding="UTF-8"?> <configuration debug="true"> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <root level="debug"> <appender-ref ref="STDOUT"/> </root> </configuration>
5、jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
#資料庫地址
jdbc.url=jdbc:mysql://localhost:3306/mytest?useUnicode=true&characterEncoding=utf8
#使用者名稱
jdbc.username=root
#密碼
jdbc.password=root
#最大連線數
c3p0.maxPoolSize=30
#最小連線數
c3p0.minPoolSize=10
#關閉連線後不自動commit
c3p0.autoCommitOnClose=false
#獲取連線超時時間
c3p0.checkoutTimeout=10000
#當獲取連線失敗重試次數
c3p0.acquireRetryAttempts=2
6、spring-mybatis.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 掃描service包下所有使用註解的型別 -->
<context:component-scan base-package="com.ssm.service"/>
<!-- 配置資料庫相關引數properties的屬性：${url} -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 資料庫連線池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxPoolSize" value="${c3p0.maxPoolSize}"/>
<property name="minPoolSize" value="${c3p0.minPoolSize}"/>
<property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>
<property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>
<property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>
</bean>
<!-- 配置SqlSessionFactory物件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入資料庫連線池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 掃描model包 使用別名 -->
<property name="typeAliasesPackage" value="com.ssm.model"/>
<!-- 掃描sql配置檔案:mapper需要的xml檔案 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!-- 配置掃描Dao介面包，動態實現Dao介面，注入到spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 給出需要掃描Dao介面包 -->
<property name="basePackage" value="com.ssm.dao"/>
</bean>
<!-- 配置事務管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入資料庫連線池 -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置基於註解的宣告式事務 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
7、spring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<!-- 掃描web相關的bean -->
<context:component-scan base-package="com.ssm.controller"/>
<!-- 開啟SpringMVC註解模式 -->
<mvc:annotation-driven/>
<!-- 靜態資源預設servlet配置 -->
<mvc:default-servlet-handler/>
<!-- 配置jsp 顯示ViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
8、web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<display-name>ChatRobot</display-name>
<description>ChatRobot_Alpha_0.0.1</description>
<!-- 編碼過濾器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置DispatcherServlet -->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springMVC需要載入的配置檔案-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-*.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<!-- 匹配所有請求，此處也可以配置成 *.do 形式 -->
<!--/*.do是對所有以.do結尾的請求做處理，/*是對所有請求做處理-->
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
9、準備資料庫--------mysql資料庫，mysql使用者名稱：root 密碼：root
資料庫名mytest、表名user
不一樣的自行修改。
10、UserController.java
package com.ssm.controller;
import com.ssm.model.User;
import com.ssm.service.IUserService;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Controller
@RequestMapping("/user")
public class UserController {
@Resource
private IUserService userService;
@RequestMapping("/showUser.do")
public void selectUser(HttpServletRequest request, HttpServletResponse response) throws IOException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
long userId = Long.parseLong(request.getParameter("id"));
User user = this.userService.selectUser(userId);
ObjectMapper mapper = new ObjectMapper();
response.getWriter().write(mapper.writeValueAsString(user));
response.getWriter().close();
}
}
11、IUserDao.java
package com.ssm.dao;
import com.ssm.model.User;
public interface IUserDao {
User selectUser(long id);
}
12、User.java
package com.ssm.model;
import java.util.Date;
public class User {
private long id;
private String email;
private String password;
private String username;
private String role;
private int status;
private Date regTime;
private String regIp;
public long getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public Date getRegTime() {
return regTime;
}
public void setRegTime(Date regTime) {
this.regTime = regTime;
}
public String getRegIp() {
return regIp;
}
public void setRegIp(String regIp) {
this.regIp = regIp;
}
}
13、IUserService.java
package com.ssm.service;
import com.ssm.model.User;
public interface IUserService {
User selectUser(long userId);
int insert(User user);
}
14、UserServiceImpl.java
package com.ssm.service.impl;
import com.ssm.dao.IUserDao;
import com.ssm.model.User;
import com.ssm.service.IUserService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service("userService")
public class UserServiceImpl implements IUserService {
@Resource
private IUserDao userDao;
public User selectUser(long userId) {
return this.userDao.selectUser(userId);
}
@Override
public int insert(User user) {
return 0;
}
}
15、UserDao.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- 設定為IUserDao介面方法提供sql語句配置 -->
<mapper namespace="com.ssm.dao.IUserDao">
<select id="selectUser" resultType="User" parameterType="long">
SELECT * FROM user WHERE id = #{id}
</select>
</mapper>
16、新建測試類，測試mybatis
IUserDaoTest.java
package com.ssm.daoTest;
import com.ssm.dao.IUserDao;
import com.ssm.model.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
// 載入spring配置檔案
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring-mybatis.xml"})
public class IUserDaoTest {
@Autowired
private IUserDao dao;
@Test
public void testSelectUser() throws Exception {
long id = 1;
User user = dao.selectUser(id);
System.out.println(user.getUsername());
}
}
17、執行測試
上面的測試程式碼的目的是：從資料庫中查詢id為1的資料。所以執行測試之前需要在資料庫中插入一兩條資料，以免報錯
測試結果：idea輸出面板會輸出id為1的使用者的名字
18、新建index.html頁面來測試SpringMVC和Mybatis
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>test</title>
</head>
<script>
function selectUser() {
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("test").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("POST", "user/showUser.do", true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send("id=1");
}
</script>
<body>
<p id="test">Hello World!</p>
<button type="button" onclick="selectUser()">onclick test</button>
</body>
</html>
19、配置tomact，右上角edit configurations
20、執行Tomact
點選按鈕
可能出現的問題：
1、資料庫名字密碼錯誤
2、資料庫中沒有id為1的資料
3、mapper對映檔案UserDao.xml中的namespace和包dao的路徑不一樣