Spring Boot REST控制器没有将给定的Json参数解析为Java对象

Question

使用Spring Boot，我想构建一个Rest控制器。但是Spring未能自动将Json转换为Java对象。是的：

• 我有空的构造
• 我试过@RequestParam，@RequestBody，@RequestPart
• 我的JSON参数是有效的（我试着用GSON解析，和它的工作）

这里是我的休息控制器：

@RestController 
public class HelloController { 

    @RequestMapping(value= "/abc", method=RequestMethod.POST) 
    @ResponseStatus(HttpStatus.OK) 
    public @ResponseBody MyResponse handlePurchase(@RequestParam A request){ 
     return new MyResponse("Simply the best"); 
    } 

} 

这里是A.java：

public class A implements Serializable { 

    private B something; 

    public B getSomething() { 
     return Something; 
    } 

    public void setSomething(B something) { 
     this.Something = something; 
    } 

    @Override 
    public String toString() { 
     return "A [Something=" + something + "]"; 
    } 

    public A(B something) { 
     super(); 
     this.Something = something; 
    } 

    public A() { 
     super(); 
    } 


} 

下面是B.java它使用A.java：

public class B implements Serializable { 
    private String something; 
    private int catsNumber; 
    private int dogsNumber; 

    public String getSomething() { 
     return something; 
    } 

    public void setSomething(String something) { 
     this.something = something; 
    } 

    public int getCatsNumber() { 
     return catsNumber; 
    } 

    public void setCatsNumber(int catsNumber) { 
     this.catsNumber = catsNumber; 
    } 

    public int getDogsNumber() { 
     return dogsNumber; 
    } 

    public void setDogsNumber(int dogsNumber) { 
     this.dogsNumber = dogsNumber; 
    } 

    @Override 
    public String toString() { 
     return "B [something=" + something + ", catsNumber=" + catsNumber + ", dogsNumber=" + dogsNumber + "]"; 
    } 

    public B() { 
     super(); 
    } 


} 

希望有人能帮助我在这，但都不曾：Spring.io

• 其他Stackoverflow Q &由于

Answer 1

@RequestParam表示url参数http://foo.com?parameter=x。在使用后，您需要定义@RequestBody

@RequestMapping(value= "/abc", method=RequestMethod.POST) 
@ResponseStatus(HttpStatus.OK) 
public @ResponseBody MyResponse handlePurchase(@RequestBody A a){ 
    return new MyResponse("Simply the best"); 
}