2021SC@SDUSC
SpringBoot 配置Filter过滤器实现身份认证
1、通过 @WebFilter 注解来配置
@Component
@WebFilter(urlPatterns = "/webapi/*", filterName = "authFilter")
public class AuthFilter implements Filter {
......
}
2、通过 @Bean 注解来配置
@Bean
public FilterRegistrationBean testFilterRegistration() {
FilterRegistrationBean registration = new FilterRegistrationBean(new TestFilter());
registration.addUrlPatterns("/webapi/*"); //
registration.addInitParameter("paramName", "paramValue"); //
registration.setName("testFilter");
return registration;
}
那如果有多个过虑器,怎么指定执行的顺序呢?
通过 registration.setOrder(1); 来设置,例如:
@Bean
public FilterRegistrationBean testFilterRegistration() {
FilterRegistrationBean<TestFilter> registration = new FilterRegistrationBean<>();
registration.setFilter(new TestFilter());
registration.addUrlPatterns("/webapi/*"); //
registration.addInitParameter("paramName", "paramValue"); //
registration.setName("testFilter");
registration.setOrder(1);
return registration;
}
@Bean
public FilterRegistrationBean authFilterRegistration() {
FilterRegistrationBean<AuthFilter> registration = new FilterRegistrationBean<>();
registration.setFilter(new AuthFilter());
registration.addUrlPatterns("/webapi/*"); //
registration.addInitParameter("paramName", "paramValue"); //
registration.setName("authFilter");
registration.setOrder(2);
return registration;
}
注意:
1、如果指定了 Order 属性,执行的顺序与注册的顺序是无关的;
2、数字越小,优先级越高;
springboot解决第三方依赖jar包的问题
maven有一种方式可以将本地的Jar包依赖到项目中而不需要先deploy到maven库上。
具体做法如下:
新建lib目录放jar包
我建在了根目录下
pom文件中依赖这样写:
<dependency>
<groupId>Ice</groupId>
<artifactId>Ice</artifactId>
<version>1.0</version>
<scope>system</scope>
<systemPath>${basedir}/src/lib/Ice.jar</systemPath>
</dependency>
basedir是自带变量,指的是当前项目的绝对路径
通过这种方式引入依赖后,在编码的时候没有问题,但是用mvn clean package打成jar包后运行就是报错,正式找不到这些jar包中的相关类。把jar包解压后在BOOT-INF/lib里面也确实没有发现用上述方式引入的jar包,看来是没有把src/lib目录里面的jar打进去,后来通过查找也终于找到方法了
修改pom文件
在build标签下增加如下配置
目的就是把src/lib下的jar打到BOOT-INF/lib下,但是必须要增加第二个resource,不然src/main/resources下的配置文件又打不进jar包了。
<resources>
<resource>
<directory>lib</directory>
<targetPath>BOOT-INF/lib/</targetPath>
<includes>
<include>**/*.jar</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<targetPath>BOOT-INF/classes/</targetPath>
</resource>
</resources>
如果要打成war包,则pom文件需要这样改:
<!--设置maven-war-plugins插件,否则外部依赖无法打进war包-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<webResources>
<resource>
<directory>lib</directory>
<targetPath>WEB-INF/lib/</targetPath>
<includes>
<include>**/*.jar</include>
</includes>
</resource>
</webResources>
</configuration>
</plugin>