SpringMVC文件上传的配置实例详解

记述一下步骤以备查。

准备工作：

需要把jakarta commons fileupload及jakarta commons io的包放lib里。

我这边的包是：

commons-fileupload-1.1.1.jar
commons-io-1.3.2.jar

然后在spring-servlet.xml进行multipartresolver配置，不配置好上传会不好用。

<bean id="multipartresolver" class="org.springframework.web.multipart.commons.commonsmultipartresolver"> 
<property name="maxuploadsize"><value>100000</value></property>
<property name="defaultencoding"><value>utf-8</value></property> 
</bean> 

接下来就是页面了：

注意form的写法和文件上传组件的写法。

<form action="uploadposdetailfile.html" method="post" enctype="multipart/form-data">
<div class="form" >
<p>
<span class="req"><input id="startdatetxt" name="startdatetxt" class="field size4" title="enter the date" /></span>
<label>start date: <span>(date format:mm/dd/yyyy,eg:01/01/2014)</span></label>
</p>
<p>
<span class="req"><input id="enddatetxt" name="enddatetxt" class="field size4" title="enter the date" /></span>
<label>end date: <span>(date format:mm/dd/yyyy,eg:12/25/2014)</span></label>
</p>
<p>
<span class="req"><input type="file" name="uploadfilectrl" class="field size4" title="choose the file" /></span>
<label>upload file: <span>(click browse to choose)</span></label>
</p>
</div>
<div class="buttons">
<input id="querybtn" type="submit" class="button" value="submit" />
</div>
</form> 

再在控制器里写处理代码，注意参数和页面控件的对应关系：

@requestmapping(value="/uploadposdetailfile")
public string uploadposdetailfile(@requestparam("startdatetxt") string startdatetxt, 
@requestparam("enddatetxt") string enddatetxt,
@requestparam("uploadfilectrl") multipartfile file,httpservletrequest request,httpservletresponse response){
try {
system.out.println("@@@@@@@@@1.startdatetxt="+startdatetxt);
system.out.println("@@@@@@@@@2.enddatetxt="+enddatetxt);
system.out.println("@@@@@@@@@3.file="+file.getoriginalfilename());// 得到上传文件的文件名
if(file.isempty()==false){
inputstream is=file.getinputstream();
inputstreamreader isr = new inputstreamreader(is);
bufferedreader br=new bufferedreader(isr); 
string s;
while((s=br.readline())!=null ){
system.out.println(s);
}
br.close();
isr.close();
is.close();
}
return "/pages/posdetail/uploadposdetailresult/index.jsp";
} catch (exception e) {
e.printstacktrace();
logger.error(e);
request.setattribute("error", e.getclass());
request.setattribute("reason", e.getmessage());
stacktraceelement[] arr=e.getstacktrace();
request.setattribute("stacktraceelements", arr);
return "pages/error/index.jsp";
}
}