Java中去除字符串兩邊空格攔截器StringTrimInterceptor

》Java中去除字符串兩邊空格攔截器StringTrimInterceptor   作者：左軒、Shiny

 

struts.xml：

<interceptors>
  
   <interceptor name="stringTrimInterceptor" class="com.huawei.ssi.interceptor.StingTrimInterceptor"></interceptor>
   <interceptor-stack name="myStack">
    <interceptor-ref name="stringTrimInterceptor" />   
    <interceptor-ref name="defaultStack" />
   </interceptor-stack>
  
  </interceptors>
  <default-interceptor-ref name="myStack" />

StringTrimInterceptor.java

package com.huawei.ssi.interceptor;


import java.util.Map;

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

public class StringTrimInterceptor extends AbstractInterceptor {

	
	private static final long serialVersionUID = -7544853178671114344L;

	@Override
	public String intercept(ActionInvocation invocation) throws Exception {
		//獲取ActionContext對象
		ActionContext context = invocation.getInvocationContext();
		//獲取客戶端參數 存放在一個map集合中
		Map<String, Object> params = context.getParameters();
		for(String key:params.keySet()){
			String[] values = (String[]) params.get(key);
			for(int i=0;i<values.length;i++){
				values[i]=values[i].trim();	
			}
			//處理完畢 篩回去
			params.put(key, values);
		}
		
		//執行下一個攔截器
		return invocation.invoke();
		

	}

}