Spring Boot 官网关于数据校验，只有寥寥几句，而且例子也相当简单，如下：
@Service
@Validated
public class MyBean {
public Archive findByCodeAndAuthor(@Size(min = 8, max = 10) String code,
Author author) {
...
}
}
但在使用过程中，还是遇到一些问题，下面记录下使用记录，以防以后忘记。
首先看下 pom.xml 文件，详细如下：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>learn-spring-boot</artifactId>
<groupId>com.lushwe.learn</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>spring-boot-exception</artifactId>
<name>spring-boot-exception</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 引入数据校验starter -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<!-- 引入数据工具 -->
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
实例一
@Validated
@RestController
public class UserController {
@GetMapping("/users/{id}")
public String getUserById(@Min(value = 1, message = "参数不合法") @PathVariable("id") Long id) {
return "zhangsan";
}
}
- 注：
-
UserController类上面需要加@Validated注解
-
实例二
@Validated
@RestController
public class UserController {
@GetMapping(value = "/users")
public String listUsers(@Valid UserReq userReq, Errors errors) {
return "";
}
}
@Data
public class UserReq {
@NotNull(message = "不能为空")
private Long userId;
}
- 注：
-
UserReq类前面需要加@Valid注解，否则UserReq类里面的校验不生效 -
UserReq类后面需要紧跟Errors类，用于接收错误，否则会一直报400错误
-
