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一. RestFul WebService的創建：
本例使用SpringMVC來寫RestFul Web Service。

1.創建【Dynamic Web Prject】

2.添加代碼：
RestFul.java：

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1. package com.webservice;
4. import java.io.OutputStreamWriter;
5. import java.io.PrintWriter;
6. import java.util.ArrayList;
7. import java.util.List;
10. import javax.servlet.http.HttpServletRequest;
11. import javax.servlet.http.HttpServletResponse;
14. import net.sf.json.JSONArray;
17. import org.springframework.stereotype.Controller;
18. import org.springframework.web.bind.annotation.PathVariable;
19. import org.springframework.web.bind.annotation.RequestMapping;
20. import org.springframework.web.bind.annotation.RequestMethod;
21. import org.springframework.web.bind.annotation.RequestParam;
24. @Controller
25. @RequestMapping(value = "/getData")
26. public class RestFul {
28. // http://localhost:8080/RestWebService/getData?userName=sun 方式的調用
29. @RequestMapping
30. public void printData1(HttpServletRequest request, HttpServletResponse response,
31. @RequestParam(value="userName", defaultValue="User") String name) {
32. String msg = "Welcome "+ name;
33. printData(response, msg);
34. }
37. // http://localhost:8080/RestWebService/getData/Sun/Royi 方式的調用
38. @RequestMapping(value = "/{firstName}/{lastName}")
39. public void printData2(HttpServletRequest request, HttpServletResponse response,
40. @PathVariable String firstName, @PathVariable String lastName) {
41. String msg = "Welcome "+ firstName + " " + lastName;
42. printData(response, msg);
43. }
45. // 轉換成HTML形式返回
46. private void printData(HttpServletResponse response, String msg) {
47. try {
48. response.setContentType("text/html;charset=utf-8");
49. response.setCharacterEncoding("UTF-8");
50. PrintWriter out = new PrintWriter(new OutputStreamWriter(response.getOutputStream(), "UTF-8"));
51. out.println(msg);
52. out.close();
53. } catch (Exception e) {
54. e.printStackTrace();
55. }
56. }
58. // http://localhost:8080/RestWebService/getData/json?item=0 方式的調用
59. @RequestMapping(value = "/json")
60. public void printData3(HttpServletRequest request, HttpServletResponse response,
61. @RequestParam(value="item", defaultValue="0") String item) {
62. printDataJason(response, item);
63. }
66. // http://localhost:8080/RestWebService/getData/json/1 方式的調用
67. @RequestMapping(value = "/json/{item}")
68. public void printData4(HttpServletRequest request, HttpServletResponse response,
69. @PathVariable String item) {
70. printDataJason(response, item);
71. }
73. // JSON格式化
74. private void printDataJason(HttpServletResponse response, String item) {
75. try {
76. response.setContentType("text/html;charset=utf-8");
77. response.setCharacterEncoding("UTF-8");
78. PrintWriter out = new PrintWriter(new OutputStreamWriter(response.getOutputStream(), "UTF-8"));
80. List<UserInfo> uiList = new ArrayList<UserInfo>();
81. for (int i=0; i<3; i++)
82. {
83. UserInfo ui = new UserInfo();
84. ui.ID = i;
85. ui.Name = "SUN" + i;
86. ui.Position = "Position" + i;
87. uiList.add(ui);
89. if (!item.equals("0")){
90. JSONArray jsonArr = JSONArray.fromObject(uiList.get(0));
91. out.println(jsonArr);
92. }
93. else{
94. JSONArray jsonArr = JSONArray.fromObject(uiList);
95. out.println(jsonArr);
96. //out.println(uiList);
97. }
99. out.close();
100. } catch (Exception e) {
101. e.printStackTrace();
102. }
103. }
104. }

UserInfo.java

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1. package com.webservice;
3. public class UserInfo{
5. Integer ID;
7. String Name;
9. String Position;
11. public Integer getID() {
12. return ID;
13. }
15. public void setID(Integer iD) {
16. ID = iD;
17. }
19. public String getName() {
20. return Name;
21. }
23. public void setName(String name) {
24. Name = name;
25. }
27. public String getPosition() {
28. return Position;
29. }
31. public void setPosition(String position) {
32. Position = position;
33. }
35. }

3.SpringMVC框架需要修改一些配置：
web.xml

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1. <?xml version="1.0" encoding="UTF-8"?>
2. <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
3. <display-name>RestWebService</display-name>
5. <!-- spring -->
6. <servlet>
7. <servlet-name>springMVC</servlet-name>
8. <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
9. <init-param>
10. <param-name>contextConfigLocation</param-name>
11. <param-value>/WEB-INF/springmvc-servlet.xml</param-value>
12. </init-param>
13. <load-on-startup>2</load-on-startup>
14. </servlet>
16. <servlet-mapping>
17. <servlet-name>springMVC</servlet-name>
18. <url-pattern>/</url-pattern>
19. </servlet-mapping>
20. </web-app>

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1. springmvc-servlet.xml：
2. <pre name="code" class="html"><?xml version="1.0" encoding="UTF-8"?>
3. <beans xmlns="http://www.springframework.org/schema/beans"
4. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5. xmlns:context="http://www.springframework.org/schema/context"
6. xmlns:mvc="http://www.springframework.org/schema/mvc"
7. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
9. http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
11. <context:annotation-config/>
13. <mvc:default-servlet-handler/>
15. <!-- 默認訪問跳轉到登錄頁面 -->
16. <mvc:view-controller path="/" view-name="redirect:/getData" />
18. <!-- Scans the classpath of this application for @Components to deploy as beans -->
19. <context:component-scan base-package="com.webservice">
20. <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
21. </context:component-scan>
23. <!-- 采用SpringMVC自帶的JSON轉換工具，支持@ResponseBody註解 -->
24. <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
25. <property name="messageConverters">
26. <list>
27. <ref bean="stringHttpMessageConverter" />
28. <ref bean="jsonHttpMessageConverter" />
29. </list>
30. </property>
31. </bean>
33. <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter">
34. <property name ="supportedMediaTypes">
35. <list>
36. <value>text/plain;charset=UTF-8</value>
37. </list>
38. </property>
39. </bean>
41. <!-- Configures the @Controller programming model -->
42. <mvc:annotation-driven/>
44. </beans>

rest-servlet.xml

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1. <?xml version="1.0" encoding="UTF-8"?>
2. <beans:beans xmlns="http://www.springframework.org/schema/mvc"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xmlns:beans="http://www.springframework.org/schema/beans"
5. xmlns:context="http://www.springframework.org/schema/context"
6. xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
7. http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
10. <!-- Enables the Spring MVC @Controller programming model -->
11. <annotation-driven />
13. <!-- for processing requests with annotated controller methods and set Message Convertors from the list of convertors -->
14. <beans:bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
15. <beans:property name="messageConverters">
16. <beans:list>
17. <beans:ref bean="jsonMessageConverter"/>
18. </beans:list>
19. </beans:property>
20. </beans:bean>
22. <!-- To convert JSON to Object and vice versa -->
23. <beans:bean id="jsonMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
24. </beans:bean>
26. <context:component-scan base-package="net.javaonline.spring.restful" />
28. </beans:beans>

4.用到的Jar包：

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1. commons-beanutils-1.8.0.jar
2. commons-collections-3.2.1.jar
3. commons-lang-2.5.jar
4. commons-logging-1.1.1.jar
5. commons-logging-1.1.3.jar
6. ezmorph-1.0.6.jar
7. jackson-all-1.9.0.jar
8. jackson-annotations-2.2.1.jar
9. jackson-core-2.2.1.jar
10. jackson-core-asl-1.7.1.jar
11. jackson-core-asl-1.8.8.jar
12. jackson-databind-2.2.1.jar
13. jackson-jaxrs-1.7.1.jar
14. jackson-mapper-asl-1.7.1.jar
15. jackson-mapper-asl-1.8.8.jar
16. jackson-module-jaxb-annotations-2.2.1.jar
17. json-lib-2.4-jdk15.jar
18. jstl-1.2.jar
19. servlet-api-2.5.jar
20. spring-aop-3.2.4.RELEASE.jar
21. spring-beans-3.2.4.RELEASE.jar
22. spring-context-3.2.4.RELEASE.jar
23. spring-core-3.2.4.RELEASE.jar
24. spring-expression-3.2.4.RELEASE.jar
25. spring-jdbc-3.2.4.RELEASE.jar
26. spring-orm-3.2.4.RELEASE.jar
27. spring-test-3.2.4.RELEASE.jar
28. spring-tx-3.2.4.RELEASE.jar
29. spring-web-3.2.4.RELEASE.jar
30. spring-webmvc-3.2.4.RELEASE.jar

5.將RestWebService項目部署到Tomcat即可。

（部署方法略）

二. RestFul WebService的調用：
方法1：用HttpClient調用：
1.創建【Java Project】：

方法1：用HttpClient調用：
1.創建【Java Project】：

Rest.java：

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1. package com.httpclientforrest;
3. import java.util.ArrayList;
4. import java.util.List;
5. import org.apache.http.HttpEntity;
6. import org.apache.http.NameValuePair;
7. import org.apache.http.client.entity.UrlEncodedFormEntity;
8. import org.apache.http.client.methods.CloseableHttpResponse;
9. import org.apache.http.client.methods.HttpPost;
10. import org.apache.http.impl.client.CloseableHttpClient;
11. import org.apache.http.impl.client.HttpClients;
12. import org.apache.http.message.BasicNameValuePair;
13. import org.apache.http.util.EntityUtils;
15. public class Rest{
17. public static void main(String[] args){
18. List<NameValuePair> params = new ArrayList<NameValuePair>();
19. params.add(new BasicNameValuePair("userName", "Sun"));
21. String url = "http://localhost:8080/RestWebService/getData";
23. System.out.println(getRest(url, params));
24. }
26. public static String getRest(String url,List<NameValuePair> params){
27. // 創建默認的httpClient實例.
28. CloseableHttpClient httpclient = HttpClients.createDefault();
29. // 創建httppost
30. HttpPost httppost = new HttpPost(url);
32. UrlEncodedFormEntity uefEntity;
34. try{
35. uefEntity = new UrlEncodedFormEntity(params, "UTF-8");
36. httppost.setEntity(uefEntity);
37. CloseableHttpResponse response = httpclient.execute(httppost);
38. HttpEntity entity = response.getEntity();
39. String json= EntityUtils.toString(entity, "UTF-8");
40. int code= response.getStatusLine().getStatusCode();
41. if(code==200 ||code ==204){
42. return json;
43. }
44. }catch (Exception e){
45. e.printStackTrace();
46. }
48. return "";
49. }
50. }

執行結果：

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1. Welcome Sun

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1. 方法2：在JSP頁面用JQuery調用：
3. 1.創建【Dynamic Web Prject】
4. 相關配置文件和創建RestFulWebService相同。
6. 2.建一個JSP頁面：
7. rest.jsp：
8. <pre name="code" class="html"><%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
9. <%
10. String path = request.getContextPath();
11. String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
12. %>
14. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
15. <html>
16. <head>
17. <base href="<%=basePath%>">
19. <title>Restfil WebService</title>
20. <meta http-equiv="pragma" content="no-cache">
21. <meta http-equiv="cache-control" content="no-cache">
22. <meta http-equiv="expires" content="0">
23. <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
24. <meta http-equiv="description" content="This is Restfil WebService Test">
25. <!--
26. <link rel="stylesheet" type="text/css" href="styles.css">
27. -->
28. </head>
30. <body>
31. <div>
32. <button id="callPrintDataWithoutParam">PrintDataWithoutParam</button>
33. <button id="callPrintDataWithParam">PrintDataWithParam</button>
34. <button id="callJsonWithoutParam">JsonWithoutParam</button>
35. <button id="callJsonWithParam">JsonWithParam</button>
36. </div>
37. <div id=‘divContext‘>
38. </div>
39. </body>
41. <script src="./script/jquery-1.8.3.min.js" type="text/javascript"></script>
42. <script type="text/javascript">
43. $(function(){
44. $(‘#callPrintDataWithoutParam‘).click(function(event){
45. document.getElementById("divContext").innerHTML = "";
47. var webserviceUrl="http://localhost:8080/RestWebService/getData" + "?userName=Sun";
48. //var webserviceUrl="http://localhost:8080/RestWebService/getData";
50. $.ajax({
51. type: ‘POST‘,
52. contentType: ‘application/json‘,
53. url: webserviceUrl,
54. //data: {"userName":"Sun"},
55. dataType: ‘html‘,
56. success: function (result) {
57. document.getElementById("divContext").innerHTML = result;
58. },
59. error:function(){
60. alert("error");
61. }
62. });
64. //取消事件的默認行為。比如：阻止對表單的提交。IE下不支持，需用window.event.returnValue = false;來實現
65. event.preventDefault();
67. });
69. $(‘#callPrintDataWithParam‘).click(function(event){
70. document.getElementById("divContext").innerHTML = "";
71. var webserviceUrl="http://localhost:8080/RestWebService/getData" + "/Sun/Royi";
73. $.ajax({
74. type: ‘POST‘,
75. contentType: ‘application/json‘,
76. url: webserviceUrl,
77. //data: "{firstName:Sun,lastName:Royi}",
78. dataType: ‘html‘,
79. success: function (result) {
80. document.getElementById("divContext").innerHTML = result;
81. },
82. error:function(){
83. alert("error");
84. }
85. });
87. event.preventDefault();
88. });
90. $(‘#callJsonWithoutParam‘).click(function(event){
91. document.getElementById("divContext").innerHTML = "";
93. $.ajax({
94. type: ‘POST‘,
95. contentType: ‘application/json‘,
96. url: ‘http://localhost:8080/RestWebService/getData/json‘,
97. data: "{}",
98. dataType: ‘json‘,
99. success: function (result) {
100. document.getElementById("divContext").innerHTML = "json:" + "<br>";
101. document.getElementById("divContext").innerHTML += result + "<br><br>";
102. document.getElementById("divContext").innerHTML += "Changed:" + "<br>";
104. for(i=0;i<result.length;i++){
105. document.getElementById("divContext").innerHTML += "ID:" + result[i].ID + "<br>";
106. document.getElementById("divContext").innerHTML += "Name:" + result[i].name + "<br>";
107. document.getElementById("divContext").innerHTML += "position:" + result[i].position + "<br>";
108. document.getElementById("divContext").innerHTML += "-------------------------------<br>";
109. }
110. },
111. error:function(){
112. alert("error");
113. }
114. });
116. event.preventDefault();
117. });
119. $(‘#callJsonWithParam‘).click(function(event){
120. document.getElementById("divContext").innerHTML = "";
122. $.ajax({
123. type: ‘POST‘,
124. contentType: ‘application/json‘,
125. url: ‘http://localhost:8080/RestWebService/getData/json/1‘,
126. //data: ‘{"item":1}‘,
127. dataType: ‘html‘,
128. success: function (result) {
129. document.getElementById("divContext").innerHTML = result;
130. },
131. error:function(){
132. alert("error");
133. }
134. });
136. event.preventDefault();
137. });
139. });
140. </script>
141. </html>
142. </span>

執行結果：PrintDataWithoutParam：

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1. Welcome Sun

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1. PrintDataWithParam：
2. <pre name="code" class="plain">Welcome Sun Royi

JsonWithoutParam：

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1. json:
2. [object Object],[object Object],[object Object]
4. Changed:
5. ID:0
6. Name:SUN0
7. position:Position0
8. -------------------------------
9. ID:1
10. Name:SUN1
11. position:Position1
12. -------------------------------
13. ID:2
14. Name:SUN2
15. position:Position2
16. -------------------------------

JsonWithParam：

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1. [{"ID":0,"name":"SUN0","position":"Position0"}]

相關文章：

WSDL WebService和RestFul WebService的個人理解：
http://blog.csdn.net/sunroyi666/article/details/51939802

WSDL WebService的創建和使用實例：

http://blog.csdn.net/sunroyi666/article/details/51917991

WSDL WebService和RestFul WebService的Sample代碼：
http://download.csdn.net/detail/sunroyi666/9577143

轉載：http://blog.csdn.net/sunroyi666/article/details/51918675

webService與Controller的用法