Spring Boot 官網關於數據校驗,只有寥寥幾句,而且例子也相當簡單,如下:
@Service
@Validated
public class MyBean {
public Archive findByCodeAndAuthor(@Size(min = 8, max = 10) String code,
Author author) {
...
}
}
但在使用過程中,還是遇到一些問題,下面記錄下使用記錄,以防以後忘記。
首頁 pom.xml
文件,詳細如下:
<?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>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<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>
實例一
@Validated
@RestController
public class UserController {
@GetMapping("/users/{id}")
public String getUserById(@Min(value = 1, message = "參數不合法") @PathVariable("id") Long id) {
return "zhangsan";
}
}
- 注:
UserController
類上面需要加@Validated
註解
實例二
@Validated
@RestController
public class UserController {
@GetMapping(value = "/users")
public String listUsers(@Valid UserReq userReq, Errors errors) {
return "";
}
}
@Data
public class UserReq {
@NotNull(message = "不能爲空")
private Long userId;
}
- 注:
UserReq
類上面需要加@Valid
註解,否則UserReq
類裏面的校驗不生效UserReq
類後面需要緊跟Errors
類,用於接收錯誤,否則會一直報400
錯誤