Spring Shiro去掉shiro登录时url里的JSESSIONID

经过查找论坛和分析源码，确认了是在ShiroHttpServletResponse里加上的。

因此继承ShiroHttpServletResponse类，覆盖相应方法，再重写 ShiroFilterFactoryBean就可以把添加JSESSIONID部分去掉。

1.重写ShiroHttpServletResponse

package com.whatled.shiro;

import org.apache.shiro.web.servlet.ShiroHttpServletRequest;
import org.apache.shiro.web.servlet.ShiroHttpServletResponse;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by leyiwo on 2017/6/27.
 */
public class MyShiroHttpServletResponse extends ShiroHttpServletResponse {
    public MyShiroHttpServletResponse(HttpServletResponse wrapped, ServletContext context, ShiroHttpServletRequest request) {
        super(wrapped, context, request);
    }

    @Override
    protected String toEncoded(String url, String sessionId) {
        if ((url == null) || (sessionId == null))
            return (url);
        String path = url;
        String query = "";
        String anchor = "";
        int question = url.indexOf(’?’);
        if (question >= 0) {
            path = url.substring(0, question);
            query = url.substring(question);
        }
        int pound = path.indexOf(’#’);
        if (pound >= 0) {
            anchor = path.substring(pound);
            path = path.substring(0, pound);
        }
        StringBuilder sb = new StringBuilder(path);
        //重写toEncoded方法，注释掉这几行代码就不会再生成JESSIONID了。
        //        if (sb.length() > 0) { // session id param can’t be first.
        //            sb.append(";");
        //            sb.append(DEFAULT_SESSION_ID_PARAMETER_NAME);
        //            sb.append("=");
        //            sb.append(sessionId);
        //        }
        sb.append(anchor);
        sb.append(query);
        return (sb.toString());
    }
}

2.扩展ShiroFilterFactoryBean, 使用新建的MyShiroHttpServletResponse。

package com.whatled.shiro;

import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.filter.mgt.FilterChainManager;
import org.apache.shiro.web.filter.mgt.FilterChainResolver;
import org.apache.shiro.web.filter.mgt.PathMatchingFilterChainResolver;
import org.apache.shiro.web.mgt.WebSecurityManager;
import org.apache.shiro.web.servlet.AbstractShiroFilter;
import org.apache.shiro.web.servlet.ShiroHttpServletRequest;
import org.springframework.beans.factory.BeanInitializationException;

import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by leyiwo on 2017/6/27.
 */
public class MyShiroFilterFactoryBean extends ShiroFilterFactoryBean {

    @Override
    public Class getObjectType() {
        return MySpringShiroFilter.class;
    }

    @Override
    protected AbstractShiroFilter createInstance() throws Exception {

        SecurityManager securityManager = getSecurityManager();
        if (securityManager == null) {
            String msg = "SecurityManager property must be set.";
            throw new BeanInitializationException(msg);
        }

        if (!(securityManager instanceof WebSecurityManager)) {
            String msg = "The security manager does not implement the WebSecurityManager interface.";
            throw new BeanInitializationException(msg);
        }
        FilterChainManager manager = createFilterChainManager();

        PathMatchingFilterChainResolver chainResolver = new PathMatchingFilterChainResolver();
        chainResolver.setFilterChainManager(manager);

        return new MySpringShiroFilter((WebSecurityManager) securityManager, chainResolver);
    }

    private static final class MySpringShiroFilter extends AbstractShiroFilter {

        protected MySpringShiroFilter(WebSecurityManager webSecurityManager, FilterChainResolver resolver) {
            super();
            if (webSecurityManager == null) {
                throw new IllegalArgumentException("WebSecurityManager property cannot be null.");
            }
            setSecurityManager(webSecurityManager);
            if (resolver != null) {
                setFilterChainResolver(resolver);
            }
        }

        @Override
        protected ServletResponse wrapServletResponse(HttpServletResponse orig, ShiroHttpServletRequest request) {
            return new MyShiroHttpServletResponse(orig, getServletContext(), request);
        }
    }
}

3.在shiro相关配置里替换成自己的MyShiroFilterFactoryBean（嗯，我是shiro和spring组合用的)

<!-- Shiro的Web过滤器 -->
    <bean id="shiroFilter" class="com.jsnr.aws.web.shiro.spring.MyShiroFilterFactoryBean">
        <property name="securityManager" ref="securityManager"/>
        <property name="loginUrl" value="/login.jsp"/>
         <property name="unauthorizedUrl" value="/unauthorized.jsp"/>

 .....  
 </bean>

注意：这里有个类型转换的问题。

SecurityManager securityManager = getSecurityManager();

来自：http://blog.csdn.net/aofavx/article/details/51701012