springboot 配置servlet filter

84 阅读 0 评论 56 点赞

我是靠谱客的博主背后小蚂蚁，这篇文章主要介绍springboot 配置servlet filter，现在分享给大家，希望可以做个参考。

1.pom文件

复制代码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
    <parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.2.RELEASE</version>
	</parent>

	<dependencies>
		<!--Spring Boot -->
		<!--支持 Web 应用开发，包含 Tomcat 和 spring-mvc。 -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
	</dependencies>

2.servlet 类

复制代码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
package com.knife.test;

import java.io.IOException;

import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebServlet;

@WebServlet(urlPatterns = "/test")
public class TestServlet implements Servlet{

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

	@Override
	public ServletConfig getServletConfig() {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
		// TODO Auto-generated method stub
		res.getWriter().print("hello ...");
	}

	@Override
	public String getServletInfo() {
		// TODO Auto-generated method stub
		return null;
	}

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

}

3.filter 类

复制代码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
package com.knife.test;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;

@WebFilter(urlPatterns = "/test")
public class TestFilter implements Filter {

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

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		// TODO Auto-generated method stub
		System.out.println("filter work ...");
		chain.doFilter(request, response);
	}

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

}

4.启动类，加上@ServletComponentScan(如果不加参数则默认扫描启动类所在包，参数例子@ServletComponentScan(value = "com.knife"))

复制代码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
package com.knife.test;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;


@ServletComponentScan
@SpringBootApplication
public class App 
{
	
	
    public static void main( String[] args )
    {
    	SpringApplication.run(App.class, args);
    }
    
	
}