１：工程结构
需要注意的是需要额外导入以下三个包：
jackson-annotations-2.6.1.jar
jackson-core-2.6.1.jar
jackson-databind-2.6.1.jar
２：配置文件
（１）web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <session-config> <session-timeout> 30 </session-timeout> </session-config> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!--Spring Restfull--> <servlet> <servlet-name>rest</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>rest</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> </web-app>
（２）rest-servlet.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" xmlns:jee="http://www.springframework.org/schema/jee" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.2.xsd"> <mvc:annotation-driven/> <context:component-scan base-package="com.wzh.api"/> <!--Dao--> <bean id="userDao" class="com.wzh.api.user.UserDaoImpl"/> <!--Service--> <bean id="userService" class="com.wzh.api.user.UserService"> <property name="userDao" ref="userDao"/> </bean> <!--Controller--> <bean id="userCtrl" class="com.wzh.api.user.UserCtrl"> <property name="userService" ref="userService"/> </bean> </beans>
３：com.wzh.comm.ResultVo
package com.wzh.comm; import com.fasterxml.jackson.databind.annotation.JsonSerialize; /** * @author y * @date 2015-9-6 18:34:44 * @version V1.0 * @desc 操作结果公共返回值对象 */ public class ResultVo { @JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL) private Integer no; @JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL) private String msg; @JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL) private Object result; public Integer getNo() { return no; } public void setNo(Integer no) { this.no = no; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public Object getResult() { return result; } public void setResult(Object result) { this.result = result; } }
使用jackson提供的注解功能：
@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
如果字段的值为NULL则不进行JOSN转换．
４：com.wzh.api.user.*
(1)UserModel.java
package com.wzh.api.user; /** * @author y * @date 2015-9-5 9:15:55 * @version V1.0 * @desc 用户对象 */ public class UserModel { private String dm; private String name; private Integer age; public String getDm() { return dm; } public void setDm(String dm) { this.dm = dm; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } }
(2)UserDao.java
package com.wzh.api.user; import java.util.List; /** * @author y * @date 2015-9-5 9:17:28 * @version 1.0 * @desc */ public interface UserDao { int add(UserModel user); int delete(String dm); int update(UserModel user); UserModel get(String dm); List<UserModel> list(UserModel user,int offset,int count); }
(3)UserDaoImpl.java
package com.wzh.api.user; import java.util.ArrayList; import java.util.List; /** * @author y * @date 2015-9-6 18:20:23 * @version V1.0 * @desc */ public class UserDaoImpl implements UserDao{ public int add(UserModel user) { return 1; } public int delete(String dm) { return 1; } public int update(UserModel user) { return 1; } public UserModel get(String dm) { UserModel um = new UserModel(); um.setDm(dm); um.setName("张三"); um.setAge(26); return um; } public List<UserModel> list(UserModel user, int offset, int count) { List<UserModel> list = new ArrayList<UserModel>(); UserModel um = new UserModel(); um.setDm("001"); um.setName("张三"); um.setAge(26); list.add(um); um = new UserModel(); um.setDm("002"); um.setName("李四"); um.setAge(26); list.add(um); um = new UserModel(); um.setDm("003"); um.setName("王五"); um.setAge(26); list.add(um); return list; } }
(4)UserService.java
package com.wzh.api.user; import com.wzh.comm.ResultVo; /** * @author y * @date 2015-9-6 18:24:13 * @version V1.0 * @desc */ public class UserService { private UserDao userDao; private ResultVo resultVo; public void setUserDao(UserDao userDao){ this.userDao = userDao; } public ResultVo add(UserModel user){ resultVo = new ResultVo(); resultVo.setNo(userDao.add(user)); resultVo.setMsg("数据增加成功"); return resultVo; } public ResultVo delete(String dm){ resultVo = new ResultVo(); resultVo.setNo(userDao.delete(dm)); resultVo.setMsg("删除成功"); return resultVo; } public ResultVo update(UserModel user){ resultVo = new ResultVo(); resultVo.setNo(userDao.update(user)); resultVo.setMsg("更新成功"); return resultVo; } public ResultVo get(String dm){ resultVo = new ResultVo(); resultVo.setNo(1); resultVo.setMsg("OK"); resultVo.setResult(userDao.get(dm)); return resultVo; } public ResultVo list(UserModel user,int offset,int count){ resultVo = new ResultVo(); resultVo.setNo(1); resultVo.setMsg("OK"); resultVo.setResult(userDao.list(user, offset, count)); return resultVo; } }
(5)UserCtrl.java
package com.wzh.api.user; import com.wzh.comm.ResultVo; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; /** * @author y * @date 2015-9-6 18:49:03 * @version V1.0 * @desc */ @RestController @RequestMapping("/api/users") public class UserCtrl { private UserService userService; public void setUserService(UserService userService){ this.userService = userService; } @RequestMapping( value="/add/{dm}/{name}/{age}", method=RequestMethod.POST, headers="Accept=application/json") public ResultVo add(@PathVariable String dm,@PathVariable String name,@PathVariable Integer age){ UserModel user = new UserModel(); user.setDm(dm); user.setName(name); user.setAge(age); return userService.add(user); } @RequestMapping( value="/{dm}", method=RequestMethod.DELETE, headers="Accept=application/json") public ResultVo delete(@PathVariable String dm){ return userService.delete(dm); } @RequestMapping( value="/update/{dm}/{name}/{age}", method=RequestMethod.PUT, headers="Accept=application/json") public ResultVo update(@PathVariable String dm,@PathVariable String name,@PathVariable Integer age){ UserModel user = new UserModel(); user.setDm(dm); user.setName(name); user.setAge(age); return userService.update(user); } @RequestMapping( value="/{dm}", method=RequestMethod.GET, headers="Accept=application/json") public ResultVo get(@PathVariable String dm){ return userService.get(dm); } @RequestMapping( method=RequestMethod.GET, headers="Accept=application/json") public ResultVo list(){ UserModel user = new UserModel(); int offset=10; int count = 10; return userService.list(user, offset, count); } }
６：测试
使用google一个插件应用Postman进行Restful测试．
（１）增加用户
（２）删除用户
（３）更新用户信息
（４）查询一个用户的详情
（５）查询集合用户详情
