使用SpringSecurity保护方法应用

<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>

package cn.coreqi.config; import org.springframework.context.annotation.Configuration;
import org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler;
import org.springframework.security.access.expression.method.MethodSecurityExpressionHandler;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration; @Configuration
@EnableGlobalMethodSecurity(securedEnabled = true,jsr250Enabled = true,prePostEnabled = true) //启用基于注解的方法安全性
public class MethodSecurityConfig extends GlobalMethodSecurityConfiguration {
/**
* 注册自定义的表达式处理器
* @return
*/
// @Override
// protected MethodSecurityExpressionHandler createExpressionHandler() {
// DefaultMethodSecurityExpressionHandler expressionHandler = new DefaultMethodSecurityExpressionHandler();
// expressionHandler.setPermissionEvaluator(new UserPermissionEvaluator());
// return expressionHandler;
// }
}

package cn.coreqi.dao.redis; import cn.coreqi.entities.User;
import org.springframework.security.access.annotation.Secured;
import org.springframework.security.access.prepost.PostAuthorize;
import org.springframework.security.access.prepost.PostFilter;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.access.prepost.PreFilter;
import org.springframework.stereotype.Repository; import java.util.List; @Repository
public class UserRedis { @Secured("ROLE_ADMIN") //限制只有ROLE_ADMIN权限才可以调用此方法
public List<User> getAll(){
return null;
} @PostAuthorize("returnObject.UserName == principal.username") //方法返回时执行，根据表达式结果决定是否抛出安全性异常
public User getById(int Id){
return null;
} @PreAuthorize("hasRole('ROLE_ADMIN') or hasRole('ROLE_SYSTEM') and #user.UserName.length() <= 16") //在方法调用前执行，如果表达式不为true则阻止方法执行
public User modify(User user){
return null;
} public void delById(int Id){
} @PostFilter("hasRole('ROLE_ADMIN') && filterObject.Age < 18") //使用表达式计算该方法返回中的每一个成员，将计算结果为false的成员移除掉。
public List<User> findMeinv()
{
return null;
} @PreFilter("hasRole('ROLE_ADMIN') && targetObject.Name == 'admin'") //在方法调用前对参数中的每一个元素进行过滤，只有满足表达式的元素才会保留到集合中
public void batchAdd(List<User> users){ }
}

package cn.coreqi.config; import org.springframework.security.access.PermissionEvaluator;
import org.springframework.security.core.Authentication; import java.io.Serializable; /**
* 自定义表达式处理器
*/
public class UserPermissionEvaluator implements PermissionEvaluator {
@Override
public boolean hasPermission(Authentication authentication, Object o, Object o1) {
return false;
} @Override
public boolean hasPermission(Authentication authentication, Serializable serializable, String s, Object o) {
return false;
}
}