Struts2拦截器属性excludeMethods、includeMethods配置无效之解决方法

在配置struts2 拦截器属性excludeMethods、includeMethods进行方法过滤时发现不起作用。

经过查看书籍之后发现，要想使方法过滤配置起作用，拦截器需要继承MethodFilterInterceptor类。MethodFilterInterceptor类是AbstractInterceptor的子类，其源代码如下：

public abstract class MethodFilterInterceptor extends AbstractInterceptor {
protected transient Logger log = LoggerFactory.getLogger(getClass());

protected Set<String> excludeMethods = Collections.emptySet();
protected Set<String> includeMethods = Collections.emptySet();

public void setExcludeMethods(String excludeMethods) {
this.excludeMethods = TextParseUtil.commaDelimitedStringToSet(excludeMethods);
}

public Set<String> getExcludeMethodsSet() {
return excludeMethods;
}

public void setIncludeMethods(String includeMethods) {
this.includeMethods = TextParseUtil.commaDelimitedStringToSet(includeMethods);
}

public Set<String> getIncludeMethodsSet() {
return includeMethods;
}

@Override
public String intercept(ActionInvocation invocation) throws Exception {
if (applyInterceptor(invocation)) {
return doIntercept(invocation);
}
return invocation.invoke();
}

protected boolean applyInterceptor(ActionInvocation invocation) {
String method = invocation.getProxy().getMethod();
// ValidationInterceptor
boolean applyMethod = MethodFilterInterceptorUtil.applyMethod(excludeMethods, includeMethods, method);
if (log.isDebugEnabled()) {
if (!applyMethod) {
log.debug("Skipping Interceptor... Method [" + method + "] found in exclude list.");
}
}
return applyMethod;
}

/**
* Subclasses must override to implement the interceptor logic.
*
* @param invocation the action invocation
* @return the result of invocation
* @throws Exception
*/
protected abstract String doIntercept(ActionInvocation invocation) throws Exception;

}

只需要实现该类中的

protected abstract String doIntercept(ActionInvocation invocation) throws Exception

即可。

样例代码：

package cua.survey.interceptor;

import java.util.Map;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import com.opensymphony.xwork2.interceptor.MethodFilterInterceptor;

public class LoginInterceptor extends MethodFilterInterceptor{

private static final long serialVersionUID = 1L;

protected String doIntercept(ActionInvocation action) throws Exception {
Map<String, Object> session = ActionContext.getContext().getSession();
String user = (String)session.get("user");
if(user != null && !"".equals(user)){
return action.invoke();
}else{
session.put("error", "your user or pwd is error, please login again...");
return Action.LOGIN;
}

}

}

实现之后拦截器属性excludeMethods、includeMethods就可以起到作用了。