直接把字符串压缩成zip，输出到客户端下载,该如何解决
日期：2014-05-20 浏览次数：20683 次
直接把字符串压缩成zip，输出到客户端下载
[code=HTML][/code]<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<%@ taglib uri="/WEB-INF/app.tld" prefix="app"%>
<%@ page import= "java.io.* " %>
<%@ page import= "java.util.zip.* " %>
<HTML>
<BODY>
<%
response.setHeader( "Content-disposition", "attachment;filename="+ "book.zip ");
response.setContentType("application/x-gzip;charset=UTF-8");
byte[] buf = new byte[1024];
ByteArrayInputStream bin = new ByteArrayInputStream("aasssssssssssssssssa".getBytes());
ByteArrayOutputStream baos = new ByteArrayOutputStream();//字符串输出流
int len = 0;
while ((len = bin.read(buf)) != -1) {
baos.write(buf, 0, len);
}
ZipOutputStream zipOut = new ZipOutputStream(baos); //zip流包装
zipOut.putNextEntry(new ZipEntry("b.txt"));
OutputStream outa = response.getOutputStream();
outa.write(baos.toByteArray());//向客户端输出被包装成zip的流
response.flushBuffer();
zipOut.close();
baos.close();
bin.close();
outa.close();
%>
</BODY>
</HTML>
------解决方案--------------------
[code=HTML][/code]<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<%@ taglib uri="/WEB-INF/app.tld" prefix="app"%>
<%@ page import= "java.io.* " %>
<%@ page import= "java.util.zip.* " %>
<HTML>
<BODY>
<%
response.setHeader( "Content-disposition", "attachment;filename="+ "book.zip ");
response.setContentType("application/x-gzip;charset=UTF-8");
byte[] buf = new byte[1024];
ByteArrayInputStream bin = new ByteArrayInputStream("aasssssssssssssssssa".getBytes());
ByteArrayOutputStream baos = new ByteArrayOutputStream();//字符串输出流
int len = 0;
while ((len = bin.read(buf)) != -1) {
baos.write(buf, 0, len);
}
ZipOutputStream zipOut = new ZipOutputStream(baos); //zip流包装
zipOut.putNextEntry(new ZipEntry("b.txt"));
OutputStream outa = response.getOutputStream();
outa.write(baos.toByteArray());//向客户端输出被包装成zip的流
response.flushBuffer();
zipOut.close();
baos.close();
bin.close();
outa.close();
%>
</BODY>
</HTML>
------解决方案--------------------
- Java code
ByteArrayOutputStream baos = new ByteArrayOutputStream();//字符串输出流
int len = 0;
while ((len = bin.read(buf)) != -1) {
baos.write(buf, 0, len);
}
ZipOutputStream zipOut = new ZipOutputStream(baos); //你这里的baos对象已经write完了，这里没了。
zipOut.putNextEntry(new ZipEntry("b.txt"));
------解决方案--------------------
try {
// Create the ZIP file
ZipOutputStream out = new ZipOutputStream(new ByteArrayOutputStream("aa").getBytes());
// Compress the files
FileInputStream in = new FileInputStream("aaaaaaaaaaa");
// Add ZIP entry to output stream.
out.putNextEntry(new ZipEntry("b.txt"));
// Transfer bytes from the file to the ZIP file
int len;
while ( (len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
// Complete the entry
out.closeEntry();
in.close();
// Complete the ZIP file
out.close();
}
catch (IOException e) {
e.printStackTrace();
}
这样。。。我没有测试。。你可以试试
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