struts上传图片

Struts2图片上传html页面代码：<tr>
                        <td align="right">业务图片:</td>
     <td><input type="file" name="file" id="imgurl" style="border:1px solid #7F9DB9;"/><span class="checkts">    *</span><span class="sm">    说明：游戏图片</span><br/></td>
   </tr>
js代码：var imgurlValue = $('#imgurl').val();  // 图片上传
if ((imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "jpg")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "jpeg")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "png")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "bmp")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "gif")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "JPG")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "JPEG")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "PNG")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "BMP")
&&(imgurlValue.substring(imgurlValue.lastIndexOf('.')+1) != "GIF")) {
//alert("系统不允许上传此种类型文件！");
$('#errorMsg').html("系统不允许上传此种类型文件");
return false;
}
action 代码：// ********************************************************
//首先将文件写入一个输入流里面
InputStream is = new FileInputStream(file);
//其次得到你要上传文件到那个目录
String root = ServletActionContext.getRequest().getRealPath("/upload/images");
DateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
String formatDate = format.format(new Date());
int random = new Random().nextInt(10000);
int position = fileFileName.indexOf(".");
String extension = fileFileName.substring(position) ;
String newFileName = formatDate + random + extension ;
//再次创建一个File来保存你的文件
File destFile = new File(root,newFileName);
//然后就是一个输出流将文件写入到File中。
OutputStream os = new FileOutputStream(destFile);
//以下就是写入文件的方式
byte buffer[] = new byte[2048];
int length = 0;
while((length = is.read(buffer))>0){
os.write(buffer,0,length);
}
//最后一定要关闭流
is.close();
os.close();

html: <input type=file name="imageFile" />java:
private File imageFile;getter/setter....FileInputStream in = new FileInputStream(imageFile);//commons-fileupload-1.2.1.jar

D:\apache-tomcat-6.0.32\work\Catalina\localhost\forum_system\upload__7ac4141d_131f5f9ce44__8000_00000000.tmp
这是操作系统路径用这个路径得不到这个图片

struts2 文件上传的例子很多建议楼主多搜搜很简单，多看看，摸索摸索，用点心。
把图片的名称保存到数据库然后读取出来加上路径的名称就ok

jsp页面  upload.jsp
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'upload.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
  </head>

  <body>
  <center>
    <form method="post" action="${pageContext.request.contextPath}/uploadAction.action" enctype="multipart/form-data">
     File:<input type="file" name="pic"></input><br />
     <input type="submit" value="上传图片"></input>
    </form>
    </center>
  </body>
</html>servlet代码package action;import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;import org.apache.struts2.interceptor.ServletRequestAware;import com.opensymphony.xwork2.ActionSupport;public class UploadAction extends ActionSupport
    implements ServletRequestAware{
/**
*
*/
private static final long serialVersionUID = 1L;
private File pic;
private String picFileName;
private HttpServletRequest request;

public String getPicFileName() {
return picFileName;
} public void setPicFileName(String picFileName) {
this.picFileName = picFileName;
} public File getPic() {
return pic;
} public void setPic(File pic) {
this.pic = pic;
} @Override
public String execute() throws Exception {
ServletContext sc = request.getSession().getServletContext();
String absoultPath = sc.getRealPath("/file");
FileInputStream in = new FileInputStream(pic);
FileOutputStream out = new FileOutputStream(absoultPath+"/"+picFileName);
byte[] b = new byte[1024];
int length = 0;
while(true){
length = in.read(b);
if(length<0)break;
out.write(b,0,length);
}
in.close();
out.close();
System.out.println(picFileName+"bbbbbbbbbbbbbbbb");
request.getSession().setAttribute("pi",pic);
System.out.println("file is "+ pic);
return "ok";
} public void setServletRequest(HttpServletRequest request) {
this.request = request;

}

}成功跳转页面}<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'uploadOK.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
  </head>

  <body>
    <center><h1>
    <img src="${pageContext.request.contextPath}/${sessionScope.pic}"/>
    </h1></center>
  </body>
</html>已经成功跳转到uploadOK，可以使这个页面仅输出一句话，怎么显示图片,很纠结，谢谢各位了

pic不能获取到地址吗？pic.getAbsolutePath()

这个路径就是pic啊 picFileName只是图片的名字

楼主你的路径不对,那个不是你上传的路径,一般是在tomcat下,可是楼主你注意看好
forum_system\upload__7ac4141d_131f5f9ce44__8000_00000000.tmp
楼主你见过这种格式的图片吗？

可是我输出来的pic就是这个啊，你们说明白点啊，不明白

你可以在system.properties中定义你的路径名
TempFilePath = C:\\1\\
RealFilePath = C:\\2\\String filepath =  PropertyUtil.getProperty("TempFilePath");
String drcPath = filepath+compid+File.separatorChar;
File drcpath = new File(drcPath);
File file =new File(drcPath+ this.getUploadFileName());
   if(!drcpath.exists()){
drcpath.mkdirs(); }
   if(!file.exists()){
   02Service.copy(this.upload, file);
//   file.delete();
   }

return SUCCESS;
public void copy(File src, File dst){

         try {
            InputStream in = null ;
            OutputStream out = null ;
             try {
                in = new BufferedInputStream( new FileInputStream(src), Ass02Constant.BUFFER_SIZE);
                out = new BufferedOutputStream( new FileOutputStream(dst), Ass02Constant.BUFFER_SIZE);
                 byte [] buffer = new byte [Ass02Constant.BUFFER_SIZE];
                 while (in.read(buffer) > 0 ) {
                    out.write(buffer);
               }
            } finally {
                 if ( null != in) {
                    in.close();
                }
                 if ( null != out) {
                    out.close();
                }
           }


        } catch (Exception e) {
           e.printStackTrace();
       }

   }

其实在struts2中上传的文件只是一个临时文件当上传组件代码执行完毕后这个临时文件就删除了你可以
通过窗口信息提示看到文件创建后又被删除了所以你需要将你的临时文件copy到你要上传的目标下面这样就可以找到了希望能帮助楼主

这个tmp是临时文件，上传完成后一般会自动删除的，完成后就没用了，你可以把它后缀名改成图片格式的，这样就能打开了

要的就是这个copy啊，怎么不说重点呢

文件名formatDate + random + extension ？

路径用相对路径存放，我记得是request.getContextXXXPath()的，获取相对路径，然后后面写该工程服务器中的文件夹。

调试易

struts上传图片

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