FormFile类型如何转换为String

2009-12-25 02:05:42 730 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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uploadFfile.jsp

<……>
<html:form action="/uploadTest" enctype="multipart/form-data">
图片上传 : <html:file property="enterprise.logo" />
<html:submit />
<html:cancel />
</html:form>
<……>
================================
struts-config.xml

<……>
<struts-config>
<data-sources />
<form-beans >
<form-bean name="uploadForm" type="com.test.forms.UploadForm" />
</form-beans>

<global-exceptions />
<global-forwards />
<action-mappings >
<action
name="uploadForm"
path="/uploadTest"
input="/uploadFfile.jsp"
scope="request"
type="com.test.actions.UploadAction" />

</action-mappings>
<……>
</struts-config>
====================================
UploadForm

<……>
public class UploadForm extends ActionForm {
private Enterprise enterprise = new Enterprise();

public void setEnterprise(Enterprise enterprise){
this.enterprise = enterprise;
}

public Enterprise getEnterprise(){
return enterprise;
}
}
<……>

==========================
下边是EnterpriseDto

public class EnterpriseDto{
private String logo; //logo地址
public void setLogo(String logo){
this.logo= logo;
}

public String getLogo(){
return logo;
}
}

=======================================
UploadAction

public class UploadAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
UploadForm uploadForm = (UploadForm )form;
FormFile logo = uploadForm.getEnterprise().getLogo();//在报的错是不能从String转化为FormFile

//我要在这得到Enterprise中的String logo保存在数据库中该如何写？？急急急
}
}

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sean1203 2009-12-25

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大哥
结贴。。。

xuexixx 2009-12-25

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谢谢大家了,解决了
在UploadForm中添加了一个FormFile,在Action中这样写就可以了(红色部分)

UploadForm

<……>
public class UploadForm extends ActionForm {
private Enterprise enterprise = new Enterprise();
private FormFile logo;
<……setter getter>

public void setEnterprise(Enterprise enterprise){
this.enterprise = enterprise;
}

public Enterprise getEnterprise(){
return enterprise;
}
}

UploadAction

public class UploadAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
UploadForm uploadForm = (UploadForm )form;
String logoPath = uploadForm.getFileName();//取得文件名
//传过来的文件用流保存到指定的硬盘就好了其他按步聚走就可了

}
}

crazylaa 2009-12-25

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楼主一个个去比对。最下面那个类是用来存文件的。
jsp:

<html:form action="/chapter/chapter.do" method="POST"

	enctype="multipart/form-data">

	

			<td colspan="4">章节文件<font color="#FF0000">*</font>    <input	type="file" name="formFile" contenteditable="false"

				style="width:500"></td>

	

</html:form>

formbean:

private FormFile formFile = null;

public FormFile getFormFile() {

		return formFile;

	}



	public void setFormFile(FormFile formFile) {

		this.formFile = formFile;

	}

action:



try {

				ChapterObj chapterObj = chapterForm.getChapterObj();

				SeriesObj seriesObj = chapterForm.getSeriesObj();

				String filePath = seriesObj.getSeriesId() + "/"

						+ chapterObj.getResolution() + "/"

						+ chapterObj.getChapterNo()

						+ COMICCFG.STORE.CHAPTER_EXT;



				chapterObj.setSeriesId(seriesObj.getSeriesId());

				chapterObj.setFilePath(filePath);

				try {

					// 获取存储根路径

					String storePath = GlobalInfo.getProperty(

							COMICCFG.STORE.comic_content, COMICCFG.STORE.app,

							COMICCFG.STORE.root_dir);

					if (storePath == null || storePath.equals("")) {

						throw new ComicException("取存储根路径失败!");

					}

					// 取上传后的文件

					FormFile formFile = chapterForm.getFormFile();

					if (formFile == null || formFile.getFileName().equals("")) {

						throw new ComicException("取上传后的章节文件失败!");

					}



					String storeDir = storePath + seriesObj.getSeriesId() + "/"

							+ chapterObj.getResolution() + "/";

					// 存文件

					FileUpload.storeFile(formFile, storeDir, chapterObj

							.getChapterNo());



					// 取操作员ID

					String operatorId = ((AdminUserForm) request.getSession()

							.getAttribute("ADMIN_USER_INFORMATION"))

							.getAdminUser().getUserId();



					// 插入数据库

					ChapterDAO.getInstance().insertChapter(chapterObj,

							operatorId);

					chapterObj.setChapterNo(String.valueOf(Integer

							.parseInt(chapterObj.getChapterNo()) + 1));

				} catch (ComicException e) {

					if (e.getMessage().contains("ORA-00001")) {

						throw new ComicException("  “章节序号－分辨率”重复！");

					} else {

						throw e;

					}

				} catch (Exception e) {

					throw e;

				}

FileUpload的存文件





/**

 * 存储文件的操作类

 */

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;



import javax.servlet.ServletException;



import org.apache.struts.upload.FormFile;



public class FileUpload {



	/**

	 * 将form接收到的文件存储到目标路径，文件名不变，文件类型后缀改为大写字母

	 * 

	 * @param formFile

	 *            action中form接受到的文件对象

	 * @param storeDir

	 *            目标路径

	 * @return 实际存储的文件全路径。

	 * @throws Exception

	 */

	public static String storeFile(FormFile formFile, String storeDir)

			throws Exception {



		String fileName = formFile.getFileName();

		String fileExtension = "";

		String filePath = "";

		try {

			if (fileName.length() == 0) {

				throw new Exception("没有选择文件!");

			}



			// 取扩展名



			if (fileName.lastIndexOf(".") > 0) {

				fileExtension = fileName.substring(

						fileName.lastIndexOf(".") + 1, fileName.length());

			}



			// 取文件名

			String[] possibleSeparator = new String[] { "/", "\\" };

			for (int i = 0; i < possibleSeparator.length; i++) {

				String separator = possibleSeparator[i];

				int index = fileName.lastIndexOf(separator);

				if (index != -1) {

					fileName = fileName.substring(index + separator.length());

					break;

				}

			}



			// 如果目录不存在，则创建目录

			File f = new File(storeDir);

			if (!f.exists()) {

				f.mkdirs();

			}

		} catch (Exception e) {

			throw e;

		}

		try {

			fileName = fileName.substring(0, fileName.lastIndexOf("."));

			filePath = storeDir + fileName + "." + fileExtension.toLowerCase();

			// 如果文件已存在，则删掉

			File file = new File(filePath);

			if (file.exists()) {

				file.delete();

			}



			BufferedInputStream in = null;

			BufferedOutputStream out = null;

			try {

				in = new BufferedInputStream(formFile.getInputStream());

				out = new BufferedOutputStream(new FileOutputStream(new File(

						filePath)));

				byte[] bytes = new byte[2048];

				int s = 0;

				int success = 0;

				while ((s = in.read(bytes)) != -1) {

					out.write(bytes, 0, s);

					success++;

				}

				if (success == 0) {

					throw new Exception("文件读取错误!");

				}

			} finally {

				try {

					in.close();

				} catch (IOException e) {

					// ignore

				}

				try {

					out.close();

				} catch (IOException e) {

					// ignore

				}

			}



		} catch (Exception ex) {

			throw new ServletException("FileItem.write() fail", ex);

		}

		return filePath;

	}



	/**

	 * 将form接收到的文件存储到目标路径，文件名按输入的文件名，文件类型后缀改为大写字母

	 * 

	 * @param formFile

	 *            action中form接受到的文件对象

	 * @param storeDir

	 *            目标路径

	 * @param fileName

	 *            输入的文件名

	 * @return 实际存储的文件全路径。

	 * @throws Exception

	 */

	public static String storeFile(FormFile formFile, String storeDir, String fileName)

			throws Exception {



		String oldFileName = formFile.getFileName();

		String fileExtension = "";

		String filePath = "";



		try {

			if (fileName.length() == 0) {

				throw new Exception("没有选择文件!");

			}

			// 取扩展名

			if (oldFileName != null && oldFileName.lastIndexOf(".") > 0) {

				fileExtension = oldFileName.substring(oldFileName

						.lastIndexOf(".") + 1, oldFileName.length());

			}



			// 取文件名

			String[] possibleSeparator = new String[] { "/", "\\" };

			for (int i = 0; i < possibleSeparator.length; i++) {

				String separator = possibleSeparator[i];

				int index = fileName.lastIndexOf(separator);

				if (index != -1) {

					fileName = fileName.substring(index + separator.length());

					break;

				}

			}



			// 如果目录不存在，则创建目录

			File f = new File(storeDir);

			if (!f.exists()) {

				f.mkdirs();

			}

		} catch (Exception e) {

			throw e;

		}



		try {

			filePath = storeDir + fileName + "." + fileExtension.toLowerCase();

			// 如果文件已存在，则删掉

			File file = new File(filePath);

			if (file.exists()) {

				file.delete();

			}

			BufferedInputStream in = null;

			BufferedOutputStream out = null;

			try {

				in = new BufferedInputStream(formFile.getInputStream());

				out = new BufferedOutputStream(new FileOutputStream(new File(

						filePath)));

				byte[] bytes = new byte[2048];

				int s = 0;

				int success = 0;

				while ((s = in.read(bytes)) != -1) {

					out.write(bytes, 0, s);

					success++;

				}

				if (success == 0) {

					throw new Exception("文件读取错误!");

				}

			} finally {

				try {

					in.close();

				} catch (IOException e) {

					// ignore

				}

				try {

					out.close();

				} catch (IOException e) {

					// ignore

				}

			}



		} catch (Exception ex) {

			throw new ServletException("FileItem.write() fail", ex);

		}

		return filePath;

	}



}

crazylaa 2009-12-25

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并且，你要在UploadForm 里面定义FormFile ff,并实现相应得get set方法。你得bean里面把它定义成String是不对的。

crazylaa 2009-12-25

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最关键得丢了！！
<html:form action="/uploadTest" method="POST" enctype="multipart/form-data">

sean1203 2009-12-25

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<html:file property="enterprise.logo" />
还是改成logo好了

sean1203 2009-12-25

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FormFile logo = uploadForm.getEnterprise().getLogo();//在报的错是不能从String转化为FormFile
一步一步拿出来
别一下子拿这么多
logo=uploadForm.getFile();
getFile是取得页面那个file控件里面的文件

FormFile类型如何转换为String

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