spring boot controller 参数接收方式

一.非json接收

1.url请求参数名==方法名

 public String addEmployee(String lastName,String email){
       return null;
    }

//调用 http://127.0.0.1:8080/add?lastName=aa&[email protected]

2.请求参数名和Controller方法中的对象的参数一致

 @GetMapping("/employee")
    public String addEmployee(Employee employee){
        return null;
    }
//调用http://127.0.0.1:8080/test/employee?lastName=战三&[email protected]

3.自定义方法参数

当url中的参数和controller中 参数 不一样时,用注解 @RequestParam

 @GetMapping("/deport")
    public String addEmployee(@RequestParam("name") String lastName,@RequestParam String email){
        return "lastName:"+lastName+",email:"+email;
    }
//调用http://127.0.0.1:8080/deport?name=张三&[email protected]

4.获取路径中接收的参数

@GetMapping("/emp/{id}")
    public Employee getEmpById(@PathVariable("id") Integer id){
        log.info("查询顾客");
        return employeeMapper.getEmpById(id);
    }
//http://127.0.0.1:8080/emp/1

二,json格式接收

1.json格式接收对象

@PostMapping("/test")
    public String addEmployee(@RequestBody Employee employee){
        return "lastName:"+employee.getLastName()+",email:"+employee.getEmail();
    }
//http://127.0.0.1:8080/resp/test

2.json接收List对象

@PostMapping("/testlist")
    public String addEmployee(@RequestBody List<Employee> employees){
        StringBuilder sb = new StringBuilder("{");
        if( null != employees){
            for(Employee employee:employees){
                sb.append("{"+"lastName:"+employee.getLastName()+",email:"+employee.getEmail()+"}");
            }
        }
        sb.append("}");
        return sb.toString();

    }
//调用 http://127.0.0.1:8080/resplist/testlist

json格式接收MAP对象

@PostMapping("/testmap")
    public String addEmployee(@RequestBody Map<String,Employee> employees){
        StringBuilder sb = new StringBuilder("[");
        if( null != employees){
            for(Map.Entry<String,Employee> employeeEntry : employees.entrySet()){
                sb.append(employeeEntry.getKey()+":"+employeeEntry.getValue()+",");
            }
        }
        sb.append("]");
        return sb.toString();
    }
//调用 http://127.0.0.1:8080/respmap/testmap

4.post单独接收一个id

@PostMapping(value="getUserById")
Public String getUserById(@RequestBody Integer id){
    return ""
}
//调用 $.post.json("jtest/getUserByid",JSON.stringfy(id),function(d){
return ""
})
    

https://www.jianshu.com/p/05092349b0f2