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最近接觸了jquery,感覺(jué)很不錯(cuò)，以后不用寫這么繁雜的js代碼了,不錯(cuò),現(xiàn)在手上又接了個(gè)新項(xiàng)目,正好在新項(xiàng)目上邊學(xué)邊用了,此文繼續(xù)更新中...

以下是近期項(xiàng)目碰到的ajax的一些問(wèn)題列舉出來(lái)供大家分享,希望有所幫助,還在不斷增加中:

1.ajax,action中response返回的xml文檔格式錯(cuò)誤時(shí),eclipse debug進(jìn)入不到action中.

2.ajax緩存問(wèn)題,需要加入xmlHttp.setRequestHeader("If-Modified-Since","0");便可解決.

3.如果不是ajax提交,而設(shè)置了PrintWriter out = response.getWriter();則jsp會(huì)產(chǎn)生中文亂碼.

4.ajax返回xml亂碼的原因
response.setContentType("text/xml;charset=GBK");
PrintWriter out = response.getWriter();
這樣才起作用,如果這樣:
PrintWriter out = response.getWriter();
response.setContentType("text/xml;charset=GBK");
那么response.setContentType("text/xml;charset=GBK");就不起作用了所以返回是亂碼,這個(gè)問(wèn)題搞了很久,代碼還得仔細(xì)看啊.

5.ajax表單提交
xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
由于傳過(guò)去的是utf-8編碼的,所以在action 或servlet中接受時(shí)要進(jìn)行相應(yīng)轉(zhuǎn)碼.

<xwork>
   <include file="webwork-default.xml"/>
   
   <package name="default" extends="webwork-default">
     <!-- Include webwork defaults (from WebWork JAR). -->
     <default-interceptor-ref name="completeStack"/>

      <action name="helloWorld"
                class="test.HelloWorldAction">
         <result name="success">hello.jsp</result>
         <result name="input">name.jsp</result>
      </action>
   </package>
  </xwork>

1. found/coin/garden                      I found a coin in my garden.
2. put/sugar/my tea                         Please put some sugar in my tea.
3. cut/wood/fire                              Cut some woods for fire.
4. bought/newspaper                      I bought a piece of newspaper this morning.
5. made/coffee                                I made a cup of coffee.
6. like/curtains in this room         I like the curtains in this room.

I have been browsing website of the Apache Software Foundation the whole day.
The Apache Software Foundation is an opensource organization of java, and it has many projects and subprojects, such as Tomcat,Struts,Logging,Web Service and Httpclient.
This organization has many volunteers from all over the world, they contribute their achievements to this organization.
The orgznization has developed rapidly.
I thouht how  I can share my achievements with them?
I know  now.
The organization has a community on it's website.
I thought I can learned a lot of knowledge of java  here. 

Up to now,my classmate Tao Wei has not found his purse.
There are 30$,a identity  card and some credit cards in his purse,Mrs Tao was very unhappy.
He wont to remember what he has done the whole day.
I  lost my purse  two months ago,there were 200$ , a identity card and 3 credit cards in my purse.
So,I understood Mrs Tao's feeling now.