struts2 trim拦截器 过滤首尾空格
package com.sais.inkaNet.login.interceptor;import java.util.Iterator;import java.util.Map;import java.util.Set;import java.util.Map.Entry;import org.apache.log4j.Logger;import com.opensymphony.xwork2.ActionInvocation;import com.opensymphony.xwork2.interceptor.AbstractInterceptor;public class TrimInterceptor extends AbstractInterceptor {private static final long serialVersionUID = 1L;private static final Logger LOG = Logger.getLogger(TrimInterceptor.class); /** * <p>方法描述: [trime掉空格]</p> * * @param invocation 参数说明 * * @return 返回结果的说明 * * @throws Exception 抛出异常的原因 */ public String intercept(ActionInvocation invocation) throws Exception { LOG.info("过滤请求数据的首尾空格"); Map<String, Object> parameters = invocation.getInvocationContext().getParameters(); Set entrySet = parameters.entrySet(); String[] strings = null; String[] values = null; int strLength = 0; for (Iterator it = entrySet.iterator(); it.hasNext();) { Entry entry = (Entry) it.next(); Object key = entry.getKey(); Object value = entry.getValue(); if (value instanceof String[]) { values = (String[]) value;//类型转换 strLength = values.length; strings = new String[strLength]; for (int i = 0; i < strLength; i++) { strings[i] = values[i].trim(); } parameters.put((String) key, strings); } } invocation.getInvocationContext().setParameters(parameters); invocation.invoke(); return null; }}?