springboot集成报文验证组件validation

1.引入validation的依赖jar

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
　 <version>3.2.3</version>
</dependency>

2.请求报文增加字段的校验规则

package com.springweb.demo.request;
import jakarta.validation.constraints.NotBlank;
import lombok.Data;

@Data
public class TestReq {
    @NotBlank(message = "请求字段不能为空！")
    private String reqText;
}

3.使用注解@Valid启动校验

package com.springweb.demo.controller;

import com.github.xiaoymin.knife4j.annotations.ApiOperationSupport;
import com.github.xiaoymin.knife4j.annotations.ApiSort;
import com.springweb.demo.request.TestReq;
import com.springweb.demo.respose.TestResp;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.validation.Valid;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/validate")
@ApiSort(2)
@Tag(name = "报文校验功能")
public class ValidateController {

    @PostMapping("/verify")
    @ResponseBody
    @Operation(summary = "请求报文校验", description = "报文校验示例", method = "POST")
    @ApiOperationSupport(order = 1)
    public TestResp verifyRequest(@Valid @RequestBody TestReq request){
       TestResp resp = new TestResp();
        String s = "hello, post method.[" + request.getReqText() + "]";
        resp.setRespText(s);
        return resp;
    }

}