标签:public import return 图片 null
别的不说,先贴代码。
1.FileUtil.java
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
/**
* 文件处理工具
* @author niuhailiang
*
*/
public class FileUtil {
/**
* 复制
* @param src
* @param dest
* @return
*/
public static boolean copy(File src,File dest){
BufferedInputStream bis=null;
BufferedOutputStream bos=null;
try {
bis=new BufferedInputStream(new FileInputStream(src));
bos=new BufferedOutputStream(new FileOutputStream(dest));
byte[]bts=new byte[1024];
int length=-1;
while((length=bis.read(bts))!=-1){
bos.write(bts, 0, length);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}finally{
if(bis!=null){
try {
bis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(bos!=null){
try {
bos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}2.部分上传代码
public String add() {
//先上传
System.out.println(".........."+goods.getGoods_name());
src=new String[some.size()];
for(int i=0;i<some.size();i++){
//将文件放到项目部署的路径下的upload文件夹下
path="/upload/"+someFileName.get(i);
//根据相对部署的路径计算完整地路径
path=ServletActionContext.getServletContext().getRealPath(path);
System.out.println(path);
//将临时的文件复制到上述路径下
FileUtil.copy(some.get(i),new File(path));
src[i]=someFileName.get(i);
}
System.out.println("进入添加方法");
goods.setCategory(categoryServcie.findById(category_id));
goods.setImages(src);
goodsService.add(goods);
ActionContext.getContext().put("url", "goods_list");
return "redirect";
}3.页面操作(部分)
<form action="goods_add.action" method="post" name="form" id="form" enctype="multipart/form-data" > <div class="MainDiv"> <table width="99%" border="0" cellpadding="0" cellspacing="0" class="CContent"> <tr> <th class="tablestyle_title"> 商品基本信息录入 </th> </tr> <tr> <td class="CPanel"> <table border="0" cellpadding="0" cellspacing="0" style="width: 100%"> <tr> <td width="100%"> <fieldset style="height: 100%;"> <legend> 商品信息 </legend> <table border="0" cellpadding="2" cellspacing="1" style="width: 100%"> <tr> <td align="center"> 商品名: </td> <td > <input name="goods_name" /> </td> </tr> <tr> <td align="center"> 商品类别: </td> <td> <s:select name="category_id" list="#categoryList" listKey="id" listValue="name" id="vip"> </s:select> </td> </tr> <tr> <td align="center"> 价格: </td> <td> <input name="price" /> </td> </tr> <tr> <td align="center"> 会员价格: </td> <td> <input name="vip_price" /> </td> </tr> <tr> <td align="center"> 图片: </td> <td> <input name="some" type="file" /> </td> <td> <input name="some" type="file" /> </td> <td> <input name="some" type="file" /> </td> <td> <input name="some" type="file" /> </td> </tr> <tr> <td align="center"> 描述: </td> <td> <input name="description" /> </td> </tr> </table> <br /> </fieldset> </td> </tr> </table> </td> </tr> <tr> <td colspan="2" align="center" height="50px"> <input type="button" name="Submit" value="保存" onclick="link();" /> <input type="button" name="Submit2" value="返回" onclick="window.history.go(-1);" /> </td> </tr> </table> </td> </tr> </table> </div> </form>
4,显示图片(上传的图片到服务器,但是数据库中保存了上传的路径),轮播显示
<div id="wrapper">
<div id="carousel">
<ul>
<s:iterator value="images" status="status">
<li><img src="${pageContext.request.contextPath}/upload/<s:property value="images[#status.index]"/>" /><span>Image</span></li>
</s:iterator>
</ul>
<div class="clearfix"></div>
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</div>标签:public import return 图片 null
原文地址:http://8648389.blog.51cto.com/8638389/1597858