struts2拦截器 获得请求方法名+获得请求参数

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struts2拦截器里如何知道你请求的是那个方法

使用:invocation.getInvocationContext().getName(); //输出Priv_queryPriv,这正是我访问的Action中的方法。

1.struts.xml中这么定义的

Xml代码


<struts>

<!-- character filter -->

<constant name="struts.i18n.encoding" value="utf-8" />

<constant name="struts.multipart.saveDir" value="/tmp" />

<constant name="struts.multipart.maxSize" value="1000000000" />

<!-- CONFIG Global Exception -->

<package name="basePriv" extends="struts-default">

<interceptors>

<interceptor name="myPrivInterceptor" class="PrivInterceptor"/>

<interceptor-stack name="b2cplatPrivInterceptor">

<interceptor-ref name="myPrivInterceptor">

<param name="includeMethods"></param>

<param name="excludeMethods">

loginMain,loginTop,loginSwitch,loginRight,login,leftMenuShow,

queryCityList,queryInOrOutAreaList,queryDistricts

</param>

</interceptor-ref>

<interceptor-ref name="defaultStack"/>

</interceptor-stack>

</interceptors>

<default-interceptor-ref name="b2cplatPrivInterceptor"/>

<global-results>

<result name="privError">/errorPrivPage.jsp</result>

<result name="updateEmpPassword">/jsp/phone/xxxx.jsp</result>

<result name="loginPage" type="redirect">/jsp/phone/login/trunToLogin.jsp</result>

</global-results>

<global-exception-mappings>

<exception-mapping result="error" exception="java.lang.Exception">/errorPage.jsp

</exception-mapping>

</global-exception-mappings>

</package>

<package name="managerPlatform" extends="basePriv" namespace="/">

<action name="*_*" class="{1}Action" method="{2}">

<result name="success">${successPath}</result>

<result name="error">${errorPath}</result>

<result name="input">${inputPath}</result>

<result name="redirectAction" type="redirectAction">${redirectActionPath}</result>

<result name="doChain" type="chain">${chainPath}</result>

<result name="redirect" type="redirect">${redirectPath}</result>

<result name="print" type="stream">

<param name="contentType">application/vnd.ms-excel</param>

<param name="inputName">inputStream</param>

<param name="contentDisposition">filename="${printFileName}"</param>

<param name="bufferSize">1024</param>

</result>

</action>

</package>

</struts>

2.Action这么写

Java代码


/**

* 权限信息控制

* @author ken

* @date 2011-9-13 下午15:00:46

*/

@Scope("prototype")

@Controller("PrivAction")

public class PrivAction extends BaseAction{

private static final long serialVersionUID = 1L;

static final Logger log = Logger.getLogger(PrivAction.class);

@Autowired

private PrivService privService;

/* 权限模型 */

private TEmployeePriv employeePriv;

/**

* 权限查询

* @return

*/

public String queryPriv(){

if(employeePriv==null){

employeePriv = new TEmployeePriv();

successPath = "/jsp/phone/priv/priv/privList.jsp";

return SUCCESS;

}

try {

entitys = this.privService.queryAllPriv(employeePriv);

} catch (Exception e) {

log.error("",e);

}

successPath = "/jsp/phone/priv/priv/privList.jsp?flag=true";

return SUCCESS;

}

}

3.struts2拦截器

Java代码


/**

* 权限拦截器Interceptor

* @author mengxianjun

* @date 2011-4-8 下午03:07:24

*

*/

@SuppressWarnings("serial")

@Component( "PrivInterceptor" )

@Scope("prototype")

public class PrivInterceptor extends MethodFilterInterceptor{

@Resource(name = "EmployeeService")

private EmployeeService empSafeService;//工号安全Service

@Resource(name="EmployeeRoleService")

private EmployeeRoleService empRoleService;

/* (non-Javadoc)

* @see com.opensymphony.xwork2.interceptor.MethodFilterInterceptor#doIntercept(com.opensymphony.xwork2.ActionInvocation)

* @author mengxianjun

* @date 2011-4-8 下午03:07:24

*/

@SuppressWarnings("unchecked")

@Override

protected String doIntercept(ActionInvocation invocation) throws Exception {

System.out.println("============"+invocation.getInvocationContext().getName());

System.out.println("============"+invocation.getInvocationContext().getLocale());

System.out.println("============"+invocation.getInvocationContext().getParameters());

System.out.println("执行到拦截器里。。。。");

ActionContext act = invocation.getInvocationContext();

//获得session

Map session = invocation.getInvocationContext().getSession();

TEmployeeInfo sessionInfo = (TEmployeeInfo) session.get("user");

String employee_id="";

/**

* 一、是否登录

*/

try

{

employee_id = sessionInfo.getEmployeeId();

}

catch( NullPointerException e )

{

act.put("message", "Session过期，请重新登录！");

return "loginPage";

}

/*=========================================================单点登录判断============================================*/

HashMap<String, String> map = (HashMap<String, String>) ServletActionContext.getServletContext().getAttribute("userList");

String sessionID_User = map.get( employee_id ); //登录用户session的ID

String sessionID_Now = ServletActionContext.getRequest().getSession().getId(); //当前session的ID

if( ! sessionID_User.trim().equals(sessionID_Now) )

{

act.put("message", "此账号已登录！");

return "privError";

}

/*=========================================================单点登录判断============================================*/

/**

* 二、登录成功后，根据URL进行权限判断

*/

if( !"".equals(employee_id.trim()) && null!=employee_id )

{

/**

* 2.1判断工号登录后，业务密码是否为123456，是跳转到商户安全设置，修改业务密码

*/

/*TEmployeeSafe empSafe = empSafeService.queryEmployeSafe(employee_id);

if( null!=empSafe )

{

String MD5password = KeyedDigestMD5.getKeyedDigest("123456","").toUpperCase();//获得123456的MD5值

String employeePass = empSafe.getEmployeePass();//获得登录密码

String employeePass2 = empSafe.getEmployeePass2();//获得工号业务密码

if( MD5password.equals(employeePass) || MD5password.equals(employeePass2) )

{

act.put("message", "欢迎使用本系统，您的登录密码、业务密码过于简单，请修改！");

return "updateEmpPassword";

}

}*/

/**

* 2.2截取请求URL

*/

HttpServletRequest request = ServletActionContext.getRequest();

String currentURL = request.getRequestURI();

String targetURL = "";

if( -1 != currentURL.indexOf("?") )//普通<form>标签是?分隔传来的参数

{

String paramURL = currentURL.substring(currentURL.indexOf("?",0), currentURL.length());//参数URL

int targetLength = currentURL.length() - paramURL.length();//去掉请求参数Length

targetURL = currentURL.substring(currentURL.indexOf("/",1), targetLength);

System.out.println("去掉请求参数路径URL:"+targetURL);

}

else if( -1 != currentURL.indexOf(";") )//struts2标签<s:form>标签是;分隔传来的参数

{

String paramURL = currentURL.substring(currentURL.indexOf(";",0), currentURL.length());//参数URL

int targetLength = currentURL.length() - paramURL.length();//去掉请求参数Length

targetURL = currentURL.substring(currentURL.indexOf("/",1), targetLength);

System.out.println("去掉请求参数路径URL:"+targetURL);

}

else

{

targetURL = currentURL.substring(currentURL.indexOf("/",1), currentURL.length());

System.out.println("请求路径URL:"+targetURL);

}

/**

* 2.3必须保证当前用户：1.工号必须开启2.角色已分配 3.角色已启用 4.角色有权限集合

*/

if("12".equals(sessionInfo.getState()))

{

act.put("message", "工号已锁定！");

return "privError";

}

else if("15".equals(sessionInfo.getState()))

{

act.put("message", "工号已注销！");

return "privError";

}

else if( sessionInfo.getRoleState()==null || "".equals(sessionInfo.getRoleState()) )

{

act.put("message", "未分配角色！");

return "privError";

}

else if( !"10".equals(sessionInfo.getRoleState()) )

{

act.put("message", "该角色未启用！");

return "privError";

}

else

{

try

{

/*1.得到中间表TRolePriv集合*/

TRolePriv rp = new TRolePriv();

rp.setRoleNum(sessionInfo.getRoleNum());

List<TRolePriv> rolePrivList = empRoleService.queryRolePriv(rp);

/*2.根据中间表TRolePriv,生成TEmployeePriv集合*/

List<TEmployeePriv> privList = new ArrayList<TEmployeePriv>();

for( TRolePriv trp : rolePrivList )

{

TEmployeePriv myPriv = empRoleService.queryPrivById(trp.getPrivNum());

if(myPriv!=null&&myPriv.getPrivUrl()!=null&&!"".equals(myPriv.getPrivUrl())){

privList.add(myPriv);//去掉一级菜单添加进privList，privUrl为空是一级菜单

}

}

/*3.权限privUrl与targetURL比较*/

if( privList.size()>0 )

{

int privState = 0;

for( TEmployeePriv p : privList )

{

/**

* 对比去掉请求参数后的URL是否一致，即/Login_login

*/

String privUrl = p.getPrivUrl();//TEmployeePriv中privUrl,可能带参数,可能不带参数

if(-1!=privUrl.indexOf("?",0)){

String paramPrivURL = privUrl.substring(privUrl.indexOf("?",0), privUrl.length());//参数URL

int targetPrivLength = privUrl.length() - paramPrivURL.length();//去掉请求参数Length

privUrl = privUrl.substring(privUrl.indexOf("/",0), targetPrivLength);//TEmployeePriv中privUrl去掉参数

}

if( privUrl.equals(targetURL) )

{

privState = 1;

}

}

if( 1 == privState )

{

return invocation.invoke();

}

else

{

System.out.println("-------得到Priv权限集合，但是无访问权限---------");

act.put("message", "您没有权限 , 拒绝访问！");

return "privError";

}

}

else

{

act.put("message", "您没有相应权限 , 拒绝访问！");

return "privError";

}

}

catch( NullPointerException e )

{

act.put("message", "您没有权限 , 拒绝访问！");

return "privError";

}

}

}

else

{

act.put("message", "Session过期，请重新登录！");

return "loginPage";

}

}

}

输出：

Html代码


16:05:35,813 INFO [STDOUT] ============Priv_queryPriv

16:05:35,813 INFO [STDOUT] ============zh_CN

16:05:35,813 INFO [STDOUT] ============{}

16:05:35,813 INFO [STDOUT] 执行到拦截器里。。。。

16:05:35,813 INFO [STDOUT] 请求路径URL:/Priv_queryPriv

=========================================================================================================

struts2 拦截拦截器怎么样获得action 后面的参数 例如 login.action? user.user_name='aaaaa'

我想获得到action 后面的参数再做判断，请问怎么样获得呢

问题补充：

我想在拦截器里面得到传入的user.user_name

最佳答案

先在拦截器intercept（）方法中获取parameters对象：

Map paramMap = invocation.getInvocationContext().getParameters();

然后用parameters对象获取参数(是一个字符串数组)：

String[] names = (String[]) paramMap.get("user.user_name");

String username=names[0];