本文地址：http://blog.csdn.net/sushengmiyan/article/details/39519509
shiro官网:http://shiro.apache.org/
本文作者：sushengmiyan
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最近想做个简单的extjs5的登录跳转，之前做了一个，但是extjs又没有跳转链接，每次刷新都需要重新登录，实现的不好，现在想实现登录用户的认证，于是看到了shiro这个框架，看起来还是比较好用的，于是开始研究。
刚开始搭建，发现官网给的hello world程序需要maven支持对pom文件研究又不深入，只能抛弃这种方式了。自己安装官方参考手册，下载了quickstart文件源码，但是这是maven文件，不会用，只能手动的新建了一个文件这样的，运行的时候报了好多错误，跑了好久，终于把hello world给运行出来了，现在分享一下可以运行的程序的创建的整个过程：
1.使用eclipse/myeclipse新建shirodemo工程
2.新建lib文件夹，将shiro-all-1.1.0.jar、slf4j-api-1.7.7.jar、slf4j-log4j12-1.7.7.jar、log4j-1.2.16.jar这些jar包添加进来。
3.build path---config build path将这些jar包添加到libraries中
4.新建自己的程序包，例如我新建com.susheng包，将quickstart中Quickstart.java中代码复制一份来。
5.添加shiro.ini和log4j.properties文件到src目录下。
6.运行程序：
程序正常运行。
之前遇到错误列表：
1.没有添加shiro.ini文件
错误信息：Exception in thread "main" org.apache.shiro.config.ConfigurationException: java.io.IOException: Resource [classpath:shiro.ini] could not be found.
原因是没有添加shiro.ini文件，解决方法，将shiro.ini放在src目录下即可解决。
2.没有正确添加self4j-log4j12.jar包
错误信息：SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
self4j的包没有添加完成，这个问题真是弄得我好久都郁闷着。看实例代码，我引入slf4j-api-1.7.7.jar包之后，都可以正常些代码，没有错误提示了，但是居然这个jar包还依赖其他jar包才可以，这相当让我不舒服啊。引入其他self4j的jar包（slf4j-log4j12-1.7.7.jar）即可解决。
3.没有引入log4j的jar包
错误信息： java.lang.NoClassDefFoundError: org/apache/log4j/Level
4.没有log4j的配置文件
错误信息：log4j:WARN No appenders could be found for logger (org.apache.shiro.io.ResourceUtils).
添加log4j.properties到src目录下即可解决问题。
最终的程序目录结构如下：
代码都是shiro例子的，也粘贴一下吧。
package com.susheng; import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.Factory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory; /**
* Simple Quickstart application showing how to use Shiro's API.
*
* @since 0.9 RC2
*/
public class Quickstart {
private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);
public static void main(String[] args) { // The easiest way to create a Shiro SecurityManager with configured
// realms, users, roles and permissions is to use the simple INI config.
// We'll do that by using a factory that can ingest a .ini file and
// return a SecurityManager instance: // Use the shiro.ini file at the root of the classpath
// (file: and url: prefixes load from files and urls respectively):
Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
SecurityManager securityManager = factory.getInstance(); // for this simple example quickstart, make the SecurityManager
// accessible as a JVM singleton. Most applications wouldn't do this
// and instead rely on their container configuration or web.xml for
// webapps. That is outside the scope of this simple quickstart, so
// we'll just do the bare minimum so you can continue to get a feel
// for things.
SecurityUtils.setSecurityManager(securityManager); // Now that a simple Shiro environment is set up, let's see what you can do: // get the currently executing user:
Subject currentUser = SecurityUtils.getSubject(); // Do some stuff with a Session (no need for a web or EJB container!!!)
Session session = currentUser.getSession();
session.setAttribute("someKey", "aValue");
String value = (String) session.getAttribute("someKey");
if (value.equals("aValue")) {
log.info("Retrieved the correct value! [" + value + "]");
} // let's login the current user so we can check against roles and permissions:
if (!currentUser.isAuthenticated()) {
UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
token.setRememberMe(true);
try {
currentUser.login(token);
} catch (UnknownAccountException uae) {
log.info("There is no user with username of " + token.getPrincipal());
} catch (IncorrectCredentialsException ice) {
log.info("Password for account " + token.getPrincipal() + " was incorrect!");
} catch (LockedAccountException lae) {
log.info("The account for username " + token.getPrincipal() + " is locked. " +
"Please contact your administrator to unlock it.");
}
// ... catch more exceptions here (maybe custom ones specific to your application?
catch (AuthenticationException ae) {
//unexpected condition? error?
}
} //say who they are:
//print their identifying principal (in this case, a username):
log.info("User [" + currentUser.getPrincipal() + "] logged in successfully."); //test a role:
if (currentUser.hasRole("schwartz")) {
log.info("May the Schwartz be with you!");
} else {
log.info("Hello, mere mortal.");
} //test a typed permission (not instance-level)
if (currentUser.isPermitted("lightsaber:weild")) {
log.info("You may use a lightsaber ring. Use it wisely.");
} else {
log.info("Sorry, lightsaber rings are for schwartz masters only.");
} //a (very powerful) Instance Level permission:
if (currentUser.isPermitted("winnebago:drive:eagle5")) {
log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'. " +
"Here are the keys - have fun!");
} else {
log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
} //all done - log out!
currentUser.logout(); System.exit(0);
}
}