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This article mainly introduces how springboot receives application/x-www-form-urlencoded type requests, which can be used for reference by interested friends. I hope you will gain a lot after reading this article. Let's take a look at it.

Request data

Id:1

RoleName:admin

RoleDes: with admin permission

Several processing methods of Controller

First kind

@ ApiOperation ("query user") @ PostMapping ("/ detailByParam") public void detailByParam (@ RequestParam (value = "id") Integer id,@RequestParam (value = "roleName") String roleName,@RequestParam (value = "roleDes") String roleDes) {System.out.println ("> id=" + id+ ", roleName=" + roleName+ ", roleDes=" + roleDes);}

Print information:

> id=1,roleName=admin,roleDes= has admin permission

The second kind

@ ApiOperation ("query user") @ PostMapping ("/ detailByParam") public void detailByParam (@ RequestParam Map params) {System.out.println ("> id=" + params.get ("id") + ", roleName=" + params.get ("roleName") + ", roleDes=" + params.get ("roleDes");}

Print information:

> id=1,roleName=admin,roleDes= has admin permission

The third kind

@ ApiOperation ("query user") @ PostMapping ("/ detailByParam") public void detailByParam (@ RequestBody String params) {System.out.println ("> >" + params);}

Print information:

> id=1&roleName=admin&roleDes=%E6%8B%A5%E6%9C%89admin%E6%9D%83%E9%99%90

The fourth kind

@ ApiOperation ("query user") @ PostMapping ("/ detailByParam") public void detailByParam (@ RequestBody GetRoleParam getRoleParam) {System.out.println ("> >" + getRoleParam);}

Return an error message:

"Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported"

SpringMVC application/x-www-form-urlencoded receiving mode test

Premise: for ease of understanding

All classes use @ Controller instead of RestController

Method uses @ RequestMapping

All postman requests are as follows

1. No comments are added before the parameter

1.1 request

Success!

1.2 map

Failure!

1.3 pojo

Success!

two。 Add @ RequestParam before the parameter

2.1 request

Failure!

2.2 map

Success!

2.3 poji

Failure!

3. Add @ RequestBody before the parameter

3.1 request

Failure!

3.2 map

Failure!

3.3 pojo

Request

Map

Pojo

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@ RequestBody

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