springboot可以实现前后端参数绑定

普通POST请求

User.java

package cn.ac.iie.bean;import java.util.List;public class Privileges {private String userName;private String authorityType;private List<String> authorityApps;public Privileges(String userName, String authorityType, List<String> authorityApps) {this.userName = userName;this.authorityType = authorityType;this.authorityApps = authorityApps;}public Privileges() {}@Overridepublic String toString() {return "Privileges{" +"userName='" + userName + '\'' +", authorityType='" + authorityType + '\'' +", authorityApps=" + authorityApps +'}';}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getAuthorityType() {return authorityType;}public void setAuthorityType(String authorityType) {this.authorityType = authorityType;}public List<String> getAuthorityApps() {return authorityApps;}public void setAuthorityApps(List<String> authorityApps) {this.authorityApps = authorityApps;}
}

新建UserController.java

@RestController
public class UserController {@Autowiredprivate UserService userService;@PostMapping("/user/add")public Object addUser(User user) {System.out.println(user);return "CREATED";}}

可以直接使用PostMan来模拟发送请求，

POST请求，发送JSON数据格式

新建PrivilegesController.java

@RestController
public class PrivilegesController {@Autowiredprivate PrivilegesService privilegesService;@PostMapping("/privileges/add")public Object privilegesAdd(@RequestBody Privileges2 privileges2) {System.out.println(privileges2);return "success";}}

Privileges.java

package cn.ac.iie.bean;import java.util.List;public class Privileges {private String userName;private String authorityType;private List<String> authorityApps;@Overridepublic String toString() {return "Privileges{" +"userName='" + userName + '\'' +", authorityType='" + authorityType + '\'' +", authorityApps=" + authorityApps +'}';}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getAuthorityType() {return authorityType;}public void setAuthorityType(String authorityType) {this.authorityType = authorityType;}public List<String> getAuthorityApps() {return authorityApps;}public void setAuthorityApps(List<String> authorityApps) {this.authorityApps = authorityApps;}
}

bean中包含list，因此需要前端传递数组，后台可以通过spring的@RequestBody直接获取出对应的bean。

postman需要准备的：

1. 选post请求
2. Headers中添加 key: Content-Type value:application/json
3. Body中选raw, JSON(application/json)
4. 文本框中写入json参数

{"userName": "vincent","authorityType": "mac","authorityApps": ["1","2"]
}

这样后台就可以收到对象了