springboot(八)自定義Filter、自定義Property

自定義Filter

　　我們常常在項目中會使用filters用於錄調用日志、排除有XSS威脅的字符、執行權限驗證等等。

　　Spring Boot自動添加了OrderedCharacterEncodingFilter和HiddenHttpMethodFilter，並且我們可以自定義Filter。

兩個步驟：

　　實現Filter接口，實現Filter方法

　　添加@Configurationz 注解，將自定義Filter加入過濾鏈

package cn.cnki.ref.filter;

import org.apache.catalina.filters.RemoteIpFilter;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

@Configuration
public class WebConfiguration {
    @Bean
    public RemoteIpFilter remoteIpFilter() {
        return new RemoteIpFilter();
    }

    @Bean
    public FilterRegistrationBean testFilterRegistration() {

        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(new MyFilter());
        registration.addUrlPatterns("/*");
        registration.addInitParameter("paramName", "paramValue");
        registration.setName("MyFilter");
        registration.setOrder(1);
        return registration;
    }

    public class MyFilter implements Filter {
        @Override
        public void destroy() {
            // TODO Auto-generated method stub
        }

        @Override
        public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterChain)
                throws IOException, ServletException {
            // TODO Auto-generated method stub
            HttpServletRequest request = (HttpServletRequest) srequest;
            System.out.println("this is MyFilter,url :"+request.getRequestURI());
            filterChain.doFilter(srequest, sresponse);
        }

        @Override
        public void init(FilterConfig arg0) throws ServletException {
            // TODO Auto-generated method stub
        }
    }
}

 測試結果

自定義Property

　　在web開發的過程中，我經常需要自定義一些配置文件，如何使用呢

　　配置在application.properties中

cn.mf.name=mf
cn.mf.description=博客園

自定義配置類

package cn.cnki.ref.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class MyProperties {
    @Value("${cn.mf.name}")
    private String name;

    @Value("${cn.mf.description}")
    private String description;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

}

測試

package cn.cnki.ref.config;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import static org.junit.Assert.*;

@RunWith(SpringRunner.class)
@SpringBootTest
public class MyPropertiesTest {
    @Autowired
    MyProperties  myProperties;

    @Test
    public void getNamegetDescription() {
        System.out.println(myProperties.getName());
        System.out.println(myProperties.getDescription());
    }

}

解決Spring Boot自定義屬性亂碼問題