SSH框架实现表单上传图片实例代码

<link rel="stylesheet" type="text/css" href="css/fileinput.min.css" rel="external nofollow" ><script type="text/javascript" src="js/fileinput.min.js"></script>

  <form action="uploadAction" method="post" enctype="multipart/form-data"    id="myform">    <!-- 图片标题   -->    <input class="form-control" type="text" name="img_title"      id="img_title" size="100" value="请输入图片名称" style="color: #999999;"      onfocus='if(this.value=="请输入图片名称"){this.value="";};'      onblur='if(this.value==""){this.value="请输入图片名称";};'> <br />    <!-- 下拉框 -->    <select name="img_state">      <option selected="selected">请选择审核状态</option>      <c:forEach items="${stateList }" var="sl">        <option value="${sl.s_id }">${sl.s_statename}</option>      </c:forEach>    </select> <br />    <br />    <!-- 图片上传控件 -->    <input type="file" name="file" id="file" class="file" /> <br>  </form>  <center>    <a href="executeimages" rel="external nofollow" class="btn btn-success">返回图集</a>  </center>

package com.Action;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.util.List;import org.apache.struts2.ServletActionContext;import Enity.cms_images;import Enity.cms_state;import SQL_Implements.images_sql_Implem;import com.opensymphony.xwork2.ActionSupport;@SuppressWarnings("serial")public class uploadAction extends ActionSupport {  /**   * 这里集合形式输入到流，防止上传重复文件,减少服务器压力   */  private String img_title;// 图片标题  private int img_state;// 状态  // 上传文件存放路径  private final static String uploadAddres = "/uploadFile";  // 上传文件集合泛型为file对象  private List<File> file;  // 上传文件名集合  private List<String> fileFileName;  // 上传文件内容类型集合  private List<String> fileContentType;  cms_images images = new cms_images();  cms_state state = new cms_state();// 实例状态类  private images_sql_Implem isi;  cms_imagesAction cia;  public cms_imagesAction getCia() {    return cia;  }  public void setCia(cms_imagesAction cia) {    this.cia = cia;  }  public int getImg_state() {    return img_state;  }  public void setImg_state(int img_state) {    this.img_state = img_state;  }  public cms_state getState() {    return state;  }  public void setState(cms_state state) {    this.state = state;  }  public images_sql_Implem getIsi() {    return isi;  }  public void setIsi(images_sql_Implem isi) {    this.isi = isi;  }  public static String getUploadaddres() {    return uploadAddres;  }  public cms_images getImages() {    return images;  }  public void setImages(cms_images images) {    this.images = images;  }  public String getImg_title() {    return img_title;  }  public void setImg_title(String img_title) {    this.img_title = img_title;  }  public List<File> getFile() {    return file;  }  public void setFile(List<File> file) {    this.file = file;  }  public List<String> getFileFileName() {    return fileFileName;  }  public void setFileFileName(List<String> fileFileName) {    this.fileFileName = fileFileName;  }  public List<String> getFileContentType() {    return fileContentType;  }  public void setFileContentType(List<String> fileContentType) {    this.fileContentType = fileContentType;  }  // 上传方法  public String execute() throws Exception {    // 打印文件名称    System.out.println("文件名称:" + this.getFileFileName());    for (int i = 0; i < file.size(); i++) {      // 循环上传每个文件      uploadFile(i);    }    /**     * 这里有bug 想每次添加完后能在查询一遍下拉框的值     */    // cia.execute();    return "uploadSuccess";  }  // 调用执行上传功能  @SuppressWarnings("deprecation")  public void uploadFile(int i) throws FileNotFoundException, IOException {    try {      InputStream in = new FileInputStream(file.get(i));      // ServletActionContext对象响应获取实际文件地址,getRealPath已经废弃不推荐用了      String dir = ServletActionContext.getRequest().getRealPath(          uploadAddres);      System.out.println("服务器路径：" + dir);      // 获取文件名称      String fileName = this.getFileFileName().get(i);      // 路径和文件名丢进file对象里      File uploadFile = new File(dir, fileName);      // 输出流      OutputStream out = new FileOutputStream(uploadFile);      // 设置文件大小1MB      byte[] buffer = new byte[1024 * 1024];      int length;      // 用循环从流中读取文件的大小      while ((length = in.read(buffer)) > 0) {        out.write(buffer, 0, length);      }      // 设置图片标题和全路径      images.setImg_title(img_title);      String imgURL = dir + "/" + fileName;      // 将全路径截取为相对路径      String strURL = imgURL.substring(32);      images.setImg_url(strURL);      // 设置状态的id，并将id对象传入      state.setS_id(img_state);      images.setImg_state(state);      // 添加图片的信息      int num = isi.addIMG(images);      System.out.println("是否上传了信息：" + num);      // 关闭输入流输出流，释放内存      in.close();      out.close();    } catch (Exception e) {      e.printStackTrace();    }  }}