springSecurity验证码拦截请求可配置

在自定义的验证码过滤器上面,加上不同的url,即可实现

/**
 * 
 */
package com.imooc.security.core.validate.code;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.StringUtils;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.social.connect.web.HttpSessionSessionStrategy;
import org.springframework.social.connect.web.SessionStrategy;
import org.springframework.web.bind.ServletRequestBindingException;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.context.request.ServletWebRequest;
import org.springframework.web.filter.OncePerRequestFilter;

/**
 * @author zhailiang
 *
 */
public class ValidateCodeFilter extends OncePerRequestFilter {
	
	private AuthenticationFailureHandler authenticationFailureHandler;
	
	private SessionStrategy sessionStrategy = new HttpSessionSessionStrategy();

	@Override
	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
			throws ServletException, IOException {
		//这里是写死了的"/authentication/form",只对登陆表单做验证,可以配置url在属性文件中,
//然后通过读取属性文件,来判断是不是需要验证码
		if(StringUtils.equals("/authentication/form", request.getRequestURI())
				&& StringUtils.equalsIgnoreCase(request.getMethod(), "post")) {
			
			try {
				validate(new ServletWebRequest(request));
			} catch (ValidateCodeException e) {
				authenticationFailureHandler.onAuthenticationFailure(request, response, e);
				//防止异常的情况下,请求还走过滤器链
				return;
			}
			
		}
		
		filterChain.doFilter(request, response);
		
	}

	private void validate(ServletWebRequest request) throws ServletRequestBindingException {
	
}

 

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