JSON data transfer parameters

Use JSON Getting started with data transfer

step1:pom.xml Import coordinates from

<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-databind</artifactId>
  <version>2.9.0</version>
</dependency>

step2: Add core configuration file @EnableWebMvc annotation

SpringMVCConfig.java

@Configuration
@ComponentScan("com.itheima.controller")
@EnableWebMvc
public class SpringMVCConfig {
    
}

step3: structure json Format data

step4: Add... Before the parameter @RequestBody annotation

UserController.java

@Controller
@RequestMapping("/User")
public class UserController {
    
    //2.2 Set the access path of the current operation 
    @RequestMapping("/save")
    @ResponseBody
    public String save(@RequestBody List<String> list){
    
        System.out.println(list);
        System.out.println("user save ...");
        return "{'module':'springmvc'}";
    }
}

Parameter type

Collection types

POJO Parameters

Set parameters

Reference resources ：
thank SpringMVC note