spring-mile米乐体育

另外jsonresult.java用于接口返回统一个json格式

import com.fasterxml.jackson.annotation.jsoninclude; import lombok.allargsconstructor; import lombok.data; import lombok.noargsconstructor; import lombok.experimental.accessors; /** *@author wang *@date 2020-9-14 * **/ @data @accessors(chain = true) @noargsconstructor @allargsconstructor @jsoninclude(jsoninclude.include.non_null) public class jsonresult { /** 成功 */ public static final int success=200; /**内部服务器错误**/ public static final int fail=500; /** 没有登录 */ public static final int not_login = 400; /** 发生异常 */ public static final int exception = 401; /** 系统错误 */ public static final int sys_error = 402; /** 参数错误 */ public static final int params_error = 403; /** 不支持或已经废弃 */ public static final int not_supported = 410; /** authcode错误 */ public static final int invalid_authcode = 444; /** 太频繁的调用 */ public static final int too_frequent = 445; /** 未知的错误 */ public static final int unknown_error = 499; private integer code; private string msg; private t data; public static jsonresult fail() { return new jsonresult(fail, "请求处理失败",null); } public static jsonresult fail(string msg) { return new jsonresult(fail, msg,null); } public static jsonresult fail(integer code,string msg) { return new jsonresult(code, msg,null); } public static jsonresult success() { return new jsonresult(success,"请求处理成功",null); } public static jsonresult success(string msg) { return new jsonresult(success,msg,null); } public static jsonresult success(t data) { return new jsonresult (success,"请求处理成功",data); } public static jsonresult success(string msg,t data) { return new jsonresult(success, msg,data); } public static jsonresult err() { return build(exception); } public static jsonresult err(string msg) { return build(exception, msg); } public jsonresult code(int code) { this.code = code; return this; } public jsonresult msg(string msg) { this.msg = msg; return this; } public jsonresult data(t data) { this.data = data; return this; } public static jsonresult build() { return new jsonresult(); } public static jsonresult build(int code) { return new jsonhttp://www.cppcns.comresult().code(code); } public static jsonresult build(int code, string msg) { return new jsonresult().code(code).msg(msg); } public static jsonresult build(int code, t data) { return new jsonresult().code(code).data(data); } public static jsonresult build(int code, string msg, t data) { return new jsonresult().code(code).msg(msg).data(data); } }

当然还有其他异常处理方式可以参考：https://www.jb51.net/article/244379.htm

七、测试效果

八、嵌套对象的校验

import lombok.data; import javax.validation.valid; import javax.validation.constraints.*; @data public class user { @notempty(message = "用户名不能为空") @size(message = "长度 [1-3] ", min = 1, max = 3, groups = validategroup.firstgroup.class) private string username; @min(message = "id不得小于0", value = 0) private integer id; @notblank(message = "地址不能为空", groups = {validategroup.thirdgroup.class, validategroup.secondegroup.class}) private string address; //在内部属性是自定义对象的时候添加 @valid 注解 ，即可开启对in对象的校验。 //记得添加@notnull注解，否则该对象可以为null，并且此时in对象的校验规则也不会抛出异常 。 @valid @notnull(message = "in 对象不能为null ", groups = {validategroup.thirdgroup.class, validategroup.secondegroup.class}) private in in; }

/** *自定义的对象，user对象中的一个属性。 */ @data public class in { @notblank(message = "str不能为空", groups = {validategroup.thirdgroup.class, validategroup.secondegroup.class}) private string str; }

九、自定义注解（自定义校验规则）

9.1 实现constraintvalidator接口

import javax.validation.constraintvalidator; import javax.validation.constraintvalidatorcontext; public class wordconstraintvalidator implements constraintvalidator { @override public boolean isvalid(object value, constraintvalidatorcontext context) { // 具体的校验规则 return value.tostring().length() == 10; } }

9.2 自定义注解

import java.lang.annotation.elementtype; import java.lang.annotation.retention; import java.lang.annotation.retentionpolicy; import java.lang.annotation.target; import javax.validation.constraint; import javax.validation.payload; @target({ elementtype.method, elementtype.field }) @retention(retentionpolicy.runtime) @constraint(validatedby = wordconstraintvalidator.class) public @interface customvalidaor { string message(); // groups 和 payload 这两个parameter 必须包含,不然会报错 class[] groups() default {}; class[] payload() default {}; }

9.3 使用

@data public class inner { @notblank(message = "str不能为空", groups = { validategroup.thirdgroup.class, validategroup.secondegroup.class }) @customvalidaor(message = "长度必须为10", groups = { validategroup.thirdgroup.class, validategroup.secondegroup.class }) private string str; }

9.4测试

访问接口

@postmapping("test6") public user test6(@validated({validategroup.secondegroup.class}) @requestbody user u) { system.out.println(u); return u; }

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