005 使用SpringMVC开发restful API二--处理创建请求

一：主要任务

1.说明

　　@RequestBody 映射请求体到java方法的参数

　　日期类型参数的处理

　　@Valid注解

　　BindingResult验证请求参数的合法性并处理校验结果

二：@RequestBody

1.@RequestBody

　　测试类

 1 /**
 2      * @throws Exception 
 3      * 
 4      */
 5     @Test
 6     public void whenCreateSuccess() throws Exception {
 7         String content="{\"username\":\"tom\",\"password\":null}";
 8         mockMvc.perform(MockMvcRequestBuilders.post("/user")
 9                 .contentType(MediaType.APPLICATION_JSON_UTF8)
10                 .content(content))
11             .andExpect(MockMvcResultMatchers.status().isOk())
12             .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
13     }

　　User.java

 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     private String id;
13     
14     @JsonView(UserSimpleView.class)
15     public String getUsername() {
16         return username;
17     }
18     public void setUsername(String username) {
19         this.username = username;
20     }
21     
22     @JsonView(UserDetailView.class)
23     public String getPassword() {
24         return password;
25     }
26     public void setPassword(String password) {
27         this.password = password;
28     }
29     
30     @JsonView(UserSimpleView.class)
31     public String getId() {
32         return id;
33     }
34     public void setId(String id) {
35         this.id = id;
36     }
37     
38 }

　　控制类

 1     @JsonView(User.UserDetailView.class)
 2     @PostMapping
 3     public User create(@RequestBody User user){
 4         System.out.println(user.getId());
 5         System.out.println(user.getUsername());
 6         System.out.println(user.getPassword());
 7         
 8         user.setId("1");
 9         return user;
10     }

三：日期类型的处理

1.说明

　　使用时间戳。

2.程序

　　User中添加Date类型字段

 1 package com.cao.dto;
 2 
 3 import java.util.Date;
 4 
 5 import com.fasterxml.jackson.annotation.JsonView;
 6 
 7 public class User {
 8     //接口
 9     public interface UserSimpleView {};
10     public interface UserDetailView extends UserSimpleView {};    //继承之后，可以展示父的所有
11     
12     private String username;
13     private String password;
14     private String id;
15     private Date birthday;
16     
17     @JsonView(UserSimpleView.class)
18     public String getUsername() {
19         return username;
20     }
21     public void setUsername(String username) {
22         this.username = username;
23     }
24     
25     @JsonView(UserDetailView.class)
26     public String getPassword() {
27         return password;
28     }
29     public void setPassword(String password) {
30         this.password = password;
31     }
32     
33     @JsonView(UserSimpleView.class)
34     public String getId() {
35         return id;
36     }
37     public void setId(String id) {
38         this.id = id;
39     }
40     
41     @JsonView(UserSimpleView.class)
42     public Date getBirthday() {
43         return birthday;
44     }
45     public void setBirthday(Date birthday) {
46         this.birthday = birthday;
47     }
48         
49 }

　　测试类

 1     /**
 2      * @throws Exception 
 3      * 测试请求的创建
 4      */
 5     @Test
 6     public void whenCreateSuccess() throws Exception {
 7         Date date=new Date();
 8         System.out.println(date.getTime());
 9         String content="{\"username\":\"tom\",\"password\":null,\"birthday\":"+date.getTime()+"}";
10         String result=mockMvc.perform(MockMvcRequestBuilders.post("/user")
11                 .contentType(MediaType.APPLICATION_JSON_UTF8)
12                 .content(content))
13             .andExpect(MockMvcResultMatchers.status().isOk())
14             .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"))
15             .andReturn().getResponse().getContentAsString();
16         System.out.println("result="+result);
17     }

　　控制类

 1 @PostMapping
 2     public User create(@RequestBody User user){
 3         System.out.println(user.getId());
 4         System.out.println(user.getUsername());
 5         System.out.println(user.getPassword());
 6         System.out.println(user.getBirthday());
 7         
 8         user.setId("1");
 9         return user;
10     }

　　效果：

四：@Valid

1.说明

　　只有满足校验的时候，才进行业务处理

2.校验的步骤

　　对字段进行校验要求

　　在服务上加@Valid

3.程序

　　User.java

 1 package com.cao.dto;
 2 
 3 import java.util.Date;
 4 
 5 import org.hibernate.validator.constraints.NotBlank;
 6 
 7 import com.fasterxml.jackson.annotation.JsonView;
 8 
 9 public class User {
10     //接口
11     public interface UserSimpleView {};
12     public interface UserDetailView extends UserSimpleView {};    //继承之后，可以展示父的所有
13     
14     private String username;
15     
16     @NotBlank
17     private String password;
18     private String id;
19     private Date birthday;
20     
21     @JsonView(UserSimpleView.class)
22     public String getUsername() {
23         return username;
24     }
25     public void setUsername(String username) {
26         this.username = username;
27     }
28     
29     @JsonView(UserDetailView.class)
30     public String getPassword() {
31         return password;
32     }
33     public void setPassword(String password) {
34         this.password = password;
35     }
36     
37     @JsonView(UserSimpleView.class)
38     public String getId() {
39         return id;
40     }
41     public void setId(String id) {
42         this.id = id;
43     }
44     
45     @JsonView(UserSimpleView.class)
46     public Date getBirthday() {
47         return birthday;
48     }
49     public void setBirthday(Date birthday) {
50         this.birthday = birthday;
51     }
52         
53 }

　　控制类

 1 @PostMapping
 2     public User create(@Valid @RequestBody User user){
 3         System.out.println(user.getId());
 4         System.out.println(user.getUsername());
 5         System.out.println(user.getPassword());
 6         System.out.println(user.getBirthday());
 7         
 8         user.setId("1");
 9         return user;
10     }

　　测试类

 1 /**
 2      * @throws Exception 
 3      * 测试请求的创建
 4      */
 5     @Test
 6     public void whenCreateSuccess() throws Exception {
 7         Date date=new Date();
 8         System.out.println(date.getTime());
 9         String content="{\"username\":\"tom\",\"password\":null,\"birthday\":"+date.getTime()+"}";
10         String result=mockMvc.perform(MockMvcRequestBuilders.post("/user")
11                 .contentType(MediaType.APPLICATION_JSON_UTF8)
12                 .content(content))
13             .andExpect(MockMvcResultMatchers.status().isOk())
14             .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"))
15             .andReturn().getResponse().getContentAsString();
16         System.out.println("result="+result);
17     }

4.效果

5.BindingResult

　　在上面的程序中，校验没有通过，则请求不进入方法体，但是有时候还需要一些处理的

6.程序

　　控制类

 1 @PostMapping
 2     public User create(@Valid @RequestBody User user,BindingResult errors){
 3         if(errors.hasErrors()) {
 4             errors.getAllErrors().stream().forEach(error->System.out.println(error.getDefaultMessage()));
 5         }
 6         
 7         System.out.println(user.getId());
 8         System.out.println(user.getUsername());
 9         System.out.println(user.getPassword());
10         System.out.println(user.getBirthday());
11         
12         user.setId("1");
13         return user;
14     }

　　控制台

　　这里暂时都打印出来，个性化还需要在后面处理。

005 使用SpringMVC开发restful API二--处理创建请求

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