一：编写用户详情服务
1.任务
@PathVariable隐射url片段到java方法的参数
在url声明中使用正则表达式
@JsonView控制json输出内容
二：@PathVariable
1.@PathVariable小测试
测试类
1 @Test2 public void whenGetInfoSuccess() throws Exception {3 //发送请求4 mockMvc.perform(MockMvcRequestBuilders.get("/user/1")5 .contentType(MediaType.APPLICATION_JSON_UTF8))6 .andExpect(MockMvcResultMatchers.status().isOk())7 .andExpect(MockMvcResultMatchers.jsonPath("$.username").value("tom"));8 } 控制类
1 @RequestMapping(value="/user/{id}",method=RequestMethod.GET)2 public User getInfo(@PathVariable(value="idid") String idid){3 System.out.println("id="+idid);4 User user=new User();5 user.setUsername("tom");6 return user;7 }
2.效果
三：url声明中的正则表达式
1.测试
测试类
1 /** 2 * 测试url声明的正则表达式 3 * @throws Exception 4 */ 5 @Test 6 public void whenGetInfoFail() throws Exception { 7 //发送请求 8 mockMvc.perform(MockMvcRequestBuilders.get("/user/aa") 9 .contentType(MediaType.APPLICATION_JSON_UTF8))10 .andExpect(MockMvcResultMatchers.status().is4xxClientError());11 } 控制类
只许传递的id为数字。
1 @RequestMapping(value="/user/{id:\\d+}",method=RequestMethod.GET)2 public User getInfo(@PathVariable(value="idid") String idid){3 System.out.println("id="+idid);4 User user=new User();5 user.setUsername("tom");6 return user;7 }
四：@JsonView
1.说明
以过滤序列化对象的字段属性，可以使你有选择的序列化对象
2.使用步骤
使用接口来声明多个视图
在值对象的get方法上指定视图
在controller方法上指定视图
3.按照步骤实现一个场景
4.程序
完成前两步
1 package com.cao.dto; 2 3 import com.fasterxml.jackson.annotation.JsonView; 4 5 public class User { 6 //接口 7 public interface UserSimpleView {}; 8 public interface UserDetailView extends UserSimpleView {}; //继承之后，可以展示父的所有 9 10 private String username;11 private String password;12 13 @JsonView(UserSimpleView.class)14 public String getUsername() {15 return username;16 }17 public void setUsername(String username) {18 this.username = username;19 }20 21 @JsonView(UserDetailView.class)22 public String getPassword() {23 return password;24 }25 public void setPassword(String password) {26 this.password = password;27 }28 29 } 完成第三步
1 package com.cao.web.controller; 2 3 import static org.mockito.Matchers.contains; 4 5 import java.util.ArrayList; 6 import java.util.List; 7 8 import org.apache.commons.lang.builder.ReflectionToStringBuilder; 9 import org.apache.commons.lang.builder.ToStringStyle;10 import org.springframework.data.domain.Pageable;11 import org.springframework.data.web.PageableDefault;12 import org.springframework.web.bind.annotation.PathVariable;13 import org.springframework.web.bind.annotation.RequestMapping;14 import org.springframework.web.bind.annotation.RequestMethod;15 import org.springframework.web.bind.annotation.RequestParam;16 import org.springframework.web.bind.annotation.RestController;17 18 import com.cao.dto.User;19 import com.cao.dto.UserQueryCondition;20 import com.fasterxml.jackson.annotation.JsonView;21 22 //此controller可以提供restful服务23 @RestController24 public class UserController {25 @RequestMapping(value="/user",method=RequestMethod.GET)26 @JsonView(User.UserSimpleView.class)27 public List query(UserQueryCondition condition,@PageableDefault(size=13) Pageable pageable){28 //反射的方法来打印29 System.out.println(ReflectionToStringBuilder.toString(condition, ToStringStyle.MULTI_LINE_STYLE));30 //31 System.out.println(pageable.getPageSize());32 System.out.println(pageable.getPageNumber());33 System.out.println(pageable.getSort());34 //35 List userList=new ArrayList<>();36 userList.add(new User());37 userList.add(new User());38 userList.add(new User());39 return userList;40 }41 42 @RequestMapping(value="/user/{id:\\d+}",method=RequestMethod.GET)43 @JsonView(User.UserDetailView.class)44 public User getInfo(@PathVariable(value="id") String idid){45 System.out.println("id="+idid);46 User user=new User();47 user.setUsername("tom");48 return user;49 }50 51 } 测试类一：
1 /* 2 * 测试几个常见的声明 3 */ 4 @Test 5 public void whenQuerySuccess() throws Exception { 6 //发送请求 7 String result=mockMvc.perform(MockMvcRequestBuilders.get("/user") 8 .param("username", "Job") 9 .param("age", "18")10 .param("xxx", "XXX")11 //分页,查第三页，每页15条，按照age降序12 // .param("page", "3")13 // .param("size", "15")14 // .param("sort", "age,desc")15 //16 .contentType(MediaType.APPLICATION_JSON_UTF8))17 .andExpect(MockMvcResultMatchers.status().isOk())18 .andExpect(MockMvcResultMatchers.jsonPath("$.length()").value(3))19 .andReturn().getResponse().getContentAsString();20 System.out.println("result="+result);21 } 效果
测试类二
1 /** 2 * 测试pathVariable 3 * @throws Exception 4 */ 5 @Test 6 public void whenGetInfoSuccess() throws Exception { 7 //发送请求 8 String result=mockMvc.perform(MockMvcRequestBuilders.get("/user/1") 9 .contentType(MediaType.APPLICATION_JSON_UTF8))10 .andExpect(MockMvcResultMatchers.status().isOk())11 .andExpect(MockMvcResultMatchers.jsonPath("$.username").value("tom"))12 .andReturn().getResponse().getContentAsString();13 System.out.println("result="+result);14 } 效果
五：重构代码
1.重构服务
@RequestMapping("/user")
@GetMapping
1 package com.cao.web.controller; 2 3 import static org.mockito.Matchers.contains; 4 5 import java.util.ArrayList; 6 import java.util.List; 7 8 import org.apache.commons.lang.builder.ReflectionToStringBuilder; 9 import org.apache.commons.lang.builder.ToStringStyle;10 import org.springframework.data.domain.Pageable;11 import org.springframework.data.web.PageableDefault;12 import org.springframework.web.bind.annotation.GetMapping;13 import org.springframework.web.bind.annotation.PathVariable;14 import org.springframework.web.bind.annotation.RequestMapping;15 import org.springframework.web.bind.annotation.RequestMethod;16 import org.springframework.web.bind.annotation.RequestParam;17 import org.springframework.web.bind.annotation.RestController;18 19 import com.cao.dto.User;20 import com.cao.dto.UserQueryCondition;21 import com.fasterxml.jackson.annotation.JsonView;22 23 //此controller可以提供restful服务24 @RestController25 @RequestMapping("/user")26 public class UserController {27 // @RequestMapping(value="/user",method=RequestMethod.GET)28 @JsonView(User.UserSimpleView.class)29 @GetMapping30 public List query(UserQueryCondition condition,@PageableDefault(size=13) Pageable pageable){31 //反射的方法来打印32 System.out.println(ReflectionToStringBuilder.toString(condition, ToStringStyle.MULTI_LINE_STYLE));33 //34 System.out.println(pageable.getPageSize());35 System.out.println(pageable.getPageNumber());36 System.out.println(pageable.getSort());37 //38 List userList=new ArrayList<>();39 userList.add(new User());40 userList.add(new User());41 userList.add(new User());42 return userList;43 }44 45 // @RequestMapping(value="/user/{id:\\d+}",method=RequestMethod.GET)46 @JsonView(User.UserDetailView.class)47 @GetMapping(value="/{id:\\d+}")48 public User getInfo(@PathVariable(value="id") String idid){49 System.out.println("id="+idid);50 User user=new User();51 user.setUsername("tom");52 return user;53 }54 55 }
2.重新跑测试类
这里主要是验证重构代码后的正确性。