Java 创建一个zip文件。然后下载
我创建了一个按钮，可以创建一个zip文件。该功能可以正确地对文件进行压缩，但是当我通过按钮（在JS文件中）调用她时，它崩溃了，并给出了一个空白页面（我想我不管理输出流），这将是一个好主意 （这是一个新的修改版本（适用于那些认为这是同一个问题的人） 代码如下： 钮扣Java 创建一个zip文件。然后下载,java,smartclient,Java,Smartclient,我创建了一个按钮，可以创建一个zip文件。该功能可以正确地对文件进行压缩，但是当我通过按钮（在JS文件中）调用她时，它崩溃了，并给出了一个空白页面（我想我不管理输出流），这将是一个好主意 （这是一个新的修改版本（适用于那些认为这是同一个问题的人） 代码如下： 钮扣 isc.ToolStripButton.create({ ID: "BooksApp_GetXmlImage_Button" ,autoDraw:false ,icon: getUIIcon("icon_xm
isc.ToolStripButton.create({
ID: "BooksApp_GetXmlImage_Button"
,autoDraw:false
,icon: getUIIcon("icon_xml_16")
,prompt: getUIMsg("book_report_get_xml",4)
,showHover:true
,hoverStyle:"book_hover_style"
,click : function () {
BooksApp_Action_loadFile("objx");
// isc.say("test");
}
});
公共静态字符串customExport（RPCManager rpc，
HttpServletResponse）引发异常{
字符串sReturn=\u Return\u OK；
试一试{
//设置doCustomResponse（）会通知RPCManager我们将
//绕过RPCManager.send
//而是直接写入servletResponse输出流
rpc.doCustomResponse（）；
setNoCacheHeaders（响应）；
writeServerDebug（“自定义导出：启动”）；
DSRequest req=rpc.getDSRequest（）；
列表结果=req.execute（）.getDataList（）；
String sReqData=（String）req.getParameter（“exportDisplay”）；
字符串sReqData_sBook_ID=”“+req.getCriteriaValue（“sBook_ID”）；
字符串sReqData_sPOV_id=“”+请求获取标准值（“sPOV_id”）；
字符串sReqData_sUser_ID=”“+req.getCriteriaValue（“sUser_ID”）；
字符串sReqData_sFormat=“+req.getCriteriaValue（“sFormat”）；
StringBuilder内容=新建StringBuilder（“获取（sReqData:
+sReqData+”，笔记本ID:“+sReqData\U笔记本ID”
+，sPOV_ID:“+sReqData_sPOV_ID+”，用户ID:
+sReqData_sUser_ID+”，格式：“+sReqData_sFormat+”）
+结果。大小（）+“行：”；
for（迭代器i=results.Iterator（）；i.hasNext（）；）{
映射记录=（映射）i.next（）；
content.append（“\n”+Books.Column\u IDNum+”：“
+record.get（Books.Column_IDNum））；
content.append（“\n”+Books.Column\u Name+”：“
+record.get（Books.Column_Name））；
}
writeServerDebug（“内容是\n”+content.toString（））；
//创建新的Office引擎
OfficeEngine myOfficeEngine=新的OfficeEngine（）；
布尔值bisconned=myOfficeEngine.get\u RepositoryBridge（）
.connectSourceDataBase（错误）；
如果（双连通）{
//连接到存储库，因此获取文件
if（sReqData格式等效信号案例（“pdf”）| | sReqData格式等效信号案例（“pptx”））{
//图书最终用户格式
字符串sReturnPptx=myOfficeEngine.performGeneratePptx(
req.getHttpServletRequest（），响应，
sReqData_sBook_ID，sReqData_sPOV_ID，
sReqData（用户ID，sReqData格式）；
writeServerDebug（“customExport调用PerformGeneratepTx，返回“+SReturnpTx”）；
}
else if（sReqData格式等效信号案例（“objx”））{
//字符串sReturnObjx=myOfficeEngine.performExport（req.getHttpServletRequest（），响应，sReqData\u sBook\u ID，sReqData\u sUser\u ID，sReqData\u sFormat
// );
字符串sReturnPptx=myOfficeEngine.performExport（req.getHttpServletRequest（），响应，sReqData\u sBook\u ID，sReqData\u sUser\u ID，sReqData\u sFormat
);
writeServerDebug（“customExport调用PerformGeneratepTx，返回“+SReturnpTx”）；
}
//释放到存储库的连接
myOfficeEngine.get_RepositoryBridge（）.freeConnectionSource（）；
}否则{
response.setContentType（“文本/普通”）；
response.addHeader（“内容处置”，
“附件；文件名=book.txt”）；
ServletOutputStream os=response.getOutputStream（）；
打印（content.toString（））；
os.flush（）；
}
}捕获（例外e）{
writeServerDebug（“错误：+e.getLocalizedMessage（））；
sReturn=Repository.\u Return\u KO；
}
回报率；
}
public String performExport(javax.servlet.http.HttpServletRequest request,javax.servlet.http.HttpServletResponse response,
String p_sBook_ID, String p_sUser_ID, String p_sFormat) {
//public String performExport(String p_sBook_ID, String p_sUser_ID, String p_sFormat) {
String sReturn = _Return_OK;
writeServerDebug("performExport(req,resp,'" + p_sBook_ID + "'," + p_sUser_ID + "," + p_sFormat + "):start");
// ====================================================
// = Get the template directory
// ====================================================
FilerManager myFiler = new FilerManager();
String sInputPath = myFiler.getDirectory(
FilerManager.DirectoryKind_Users, true);
// Here add TMP directories to write XML's structure and ZIP
// sInputPath+="TMP";
// ====================================================
// = Working variables JDBC objects.
// ====================================================
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
String SQL = "";
// String sLogMsg = "loadSourceDataBaseParams():";
// PreparedStatement prepStmtTarget = null;
try {
writeServerDebug("performExport >> START");
// ---------------------------------------------------------
// - Establish the connection.
// ---------------------------------------------------------
con = get_RepositoryBridge().getSourceDataBaseConnection();
} catch (Exception ex) {
sReturn = Repository._Return_KO;
}
HashMap<String, Object> _hCacheBook = new HashMap<String, Object>();
try {
int iSrcCount = get_RepositoryBridge().cacheQueryData(
"SELECT TOP(1) * FROM " + Books.Table + " WHERE "
+ Books.Column_IDNum + "=" + p_sBook_ID,
_hCacheBook, "DataBase_Source");
int iColCount = (Integer) (_hCacheBook.get("SQL_ColumnCount"));
String sColDesc = (String) (_hCacheBook.get("SQL_ColumnDesc"));
String sColValues = (String) (_hCacheBook
.get("SQL_ColumnValues"));
writeServerDebug("performExport:iColCount=" + iColCount);
writeServerDebug("performExport:sColDesc=" + sColDesc);
writeServerDebug("performExport:sColValues=" + sColValues);
for (int iLineCounter = 1; iLineCounter <= iSrcCount; iLineCounter++) {
for (int iColCounter = 1; iColCounter <= iColCount; iColCounter++) {
String sTmpColClass = (String) (_hCacheBook
.get("SQL_ColumnDescClass(" + iColCounter + ")"));// return
if (sTmpColClass.equals("java.lang.String")) {
System.out.println(_hCacheBook.get(iLineCounter+"_"+iColCounter));
}
else if (sTmpColClass.equals("java.lang.Integer")) {
System.out.println(_hCacheBook.get(iLineCounter+"_"+iColCounter));
} else if (sTmpColClass.equals("java.lang.Double")) {
System.out.println(_hCacheBook.get(iLineCounter+"_"+iColCounter));
}
}
}
int nbrCol = (Integer) (_hCacheBook.get("SQL_ColumnCount"));
System.out.println("test nbr col : "+ nbrCol);
ZipOutputStream objx = this.CreatXml(nbrCol, 1, _hCacheBook);
response.setHeader("Content-disposition",
"attachment;filename=\testJS.zip\"");
String sContentType = "application/vnd.ms-objx";
response.setContentType(sContentType);
ServletOutputStream outStream = response.getOutputStream();
outStream.close();
}
catch (Exception ex) {
System.out.println("I AM IN THE EXCEPTION :");
ex.printStackTrace();
}
return sReturn;
}
public String performExport（javax.servlet.http.HttpServletRequest请求，javax.servlet.http.HttpServletResponse响应，
字符串p_sBook_ID、字符串p_sUser_ID、字符串p_sFormat）{
//公共字符串performExport（字符串p_sBook_ID、字符串p_sUser_ID、字符串p_sFormat）{
字符串sReturn=\u Return\u OK；
writeServerDebug（“performExport（请求，响应，”+p_sBook_ID+”、“+p_sUser_ID+”、“+p_sFormat+”）：启动”）；
// ====================================================
//=获取模板目录
// ====================================================
FilerManager myFiler=新FilerManager（）；
字符串sInputPath=myFiler.getDirectory(
public static String customExport(RPCManager rpc,
HttpServletResponse response) throws Exception {
String sReturn = _Return_OK;
try {
// setting doCustomResponse() notifies the RPCManager that we'll
// bypass RPCManager.send
// and instead write directly to the servletResponse output stream
rpc.doCustomResponse();
RequestContext.setNoCacheHeaders(response);
writeServerDebug("customExport : start");
DSRequest req = rpc.getDSRequest();
List<?> results = req.execute().getDataList();
String sReqData = (String) req.getParameter("exportDisplay");
String sReqData_sBook_ID = "" + req.getCriteriaValue("sBook_ID");
String sReqData_sPOV_IDs = "" + req.getCriteriaValue("sPOV_IDs");
String sReqData_sUser_ID = "" + req.getCriteriaValue("sUser_ID");
String sReqData_sFormat = "" + req.getCriteriaValue("sFormat");
StringBuilder content = new StringBuilder("get (sReqData:"
+ sReqData + ",sBook_ID:" + sReqData_sBook_ID
+ ",sPOV_IDs:" + sReqData_sPOV_IDs + ",sUser_ID:"
+ sReqData_sUser_ID + ",sFormat:" + sReqData_sFormat + ")"
+ results.size() + " line(s):");
for (Iterator<?> i = results.iterator(); i.hasNext();) {
Map<?, ?> record = (Map<?, ?>) i.next();
content.append("\n" + Books.Column_IDNum + ":"
+ record.get(Books.Column_IDNum));
content.append("\n" + Books.Column_Name + ":"
+ record.get(Books.Column_Name));
}
writeServerDebug("The content is \n" + content.toString());
// Create the new Office Engine
OfficeEngine myOfficeEngine = new OfficeEngine();
boolean bIsConnected = myOfficeEngine.get_RepositoryBridge()
.connectSourceDataBase(false);
if (bIsConnected) {
//Connected to the repository, so get the files
if (sReqData_sFormat.equalsIgnoreCase("pdf") || sReqData_sFormat.equalsIgnoreCase("pptx")) {
//The book end user format
String sReturnPptx = myOfficeEngine.performGeneratePptx(
req.getHttpServletRequest(), response,
sReqData_sBook_ID, sReqData_sPOV_IDs,
sReqData_sUser_ID, sReqData_sFormat);
writeServerDebug("customExport call performGeneratePptx, return is "+ sReturnPptx);
}
else if (sReqData_sFormat.equalsIgnoreCase("objx")) {
//String sReturnObjx = myOfficeEngine.performExport(req.getHttpServletRequest(), response,sReqData_sBook_ID,sReqData_sUser_ID,sReqData_sFormat
// );
String sReturnPptx = myOfficeEngine.performExport(req.getHttpServletRequest(), response,sReqData_sBook_ID,sReqData_sUser_ID,sReqData_sFormat
);
writeServerDebug("customExport call performGeneratePptx, return is " + sReturnPptx);
}
//Free the connection to repository
myOfficeEngine.get_RepositoryBridge().freeConnectionSource();
} else {
response.setContentType("text/plain");
response.addHeader("content-disposition",
"attachment; filename=book.txt");
ServletOutputStream os = response.getOutputStream();
os.print(content.toString());
os.flush();
}
} catch (Exception e) {
writeServerDebug("ERROR:" + e.getLocalizedMessage());
sReturn = Repository._Return_KO;
}
return sReturn;
}
public String performExport(javax.servlet.http.HttpServletRequest request,javax.servlet.http.HttpServletResponse response,
String p_sBook_ID, String p_sUser_ID, String p_sFormat) {
//public String performExport(String p_sBook_ID, String p_sUser_ID, String p_sFormat) {
String sReturn = _Return_OK;
writeServerDebug("performExport(req,resp,'" + p_sBook_ID + "'," + p_sUser_ID + "," + p_sFormat + "):start");
// ====================================================
// = Get the template directory
// ====================================================
FilerManager myFiler = new FilerManager();
String sInputPath = myFiler.getDirectory(
FilerManager.DirectoryKind_Users, true);
// Here add TMP directories to write XML's structure and ZIP
// sInputPath+="TMP";
// ====================================================
// = Working variables JDBC objects.
// ====================================================
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
String SQL = "";
// String sLogMsg = "loadSourceDataBaseParams():";
// PreparedStatement prepStmtTarget = null;
try {
writeServerDebug("performExport >> START");
// ---------------------------------------------------------
// - Establish the connection.
// ---------------------------------------------------------
con = get_RepositoryBridge().getSourceDataBaseConnection();
} catch (Exception ex) {
sReturn = Repository._Return_KO;
}
HashMap<String, Object> _hCacheBook = new HashMap<String, Object>();
try {
int iSrcCount = get_RepositoryBridge().cacheQueryData(
"SELECT TOP(1) * FROM " + Books.Table + " WHERE "
+ Books.Column_IDNum + "=" + p_sBook_ID,
_hCacheBook, "DataBase_Source");
int iColCount = (Integer) (_hCacheBook.get("SQL_ColumnCount"));
String sColDesc = (String) (_hCacheBook.get("SQL_ColumnDesc"));
String sColValues = (String) (_hCacheBook
.get("SQL_ColumnValues"));
writeServerDebug("performExport:iColCount=" + iColCount);
writeServerDebug("performExport:sColDesc=" + sColDesc);
writeServerDebug("performExport:sColValues=" + sColValues);
for (int iLineCounter = 1; iLineCounter <= iSrcCount; iLineCounter++) {
for (int iColCounter = 1; iColCounter <= iColCount; iColCounter++) {
String sTmpColClass = (String) (_hCacheBook
.get("SQL_ColumnDescClass(" + iColCounter + ")"));// return
if (sTmpColClass.equals("java.lang.String")) {
System.out.println(_hCacheBook.get(iLineCounter+"_"+iColCounter));
}
else if (sTmpColClass.equals("java.lang.Integer")) {
System.out.println(_hCacheBook.get(iLineCounter+"_"+iColCounter));
} else if (sTmpColClass.equals("java.lang.Double")) {
System.out.println(_hCacheBook.get(iLineCounter+"_"+iColCounter));
}
}
}
int nbrCol = (Integer) (_hCacheBook.get("SQL_ColumnCount"));
System.out.println("test nbr col : "+ nbrCol);
ZipOutputStream objx = this.CreatXml(nbrCol, 1, _hCacheBook);
response.setHeader("Content-disposition",
"attachment;filename=\testJS.zip\"");
String sContentType = "application/vnd.ms-objx";
response.setContentType(sContentType);
ServletOutputStream outStream = response.getOutputStream();
outStream.close();
}
catch (Exception ex) {
System.out.println("I AM IN THE EXCEPTION :");
ex.printStackTrace();
}
return sReturn;
}
public String performExport(javax.servlet.http.HttpServletRequest request,javax.servlet.http.HttpServletResponse response,
String p_sBook_ID, String p_sUser_ID, String p_sFormat) {
String sReturn = _Return_OK;
try {
writeServerDebug("performExport(req,resp,'" + p_sBook_ID + "'," + p_sUser_ID + "," + p_sFormat + "):start");
// ====================================================
// = Get the template directory
// ====================================================
FilerManager myFiler = new FilerManager();
String sInputPath = myFiler.getDirectory(
FilerManager.DirectoryKind_Users, true);
// ====================================================
// = Working variables JDBC objects.
// ====================================================
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
String SQL = "";
try {
writeServerDebug("performExport >> START");
// ---------------------------------------------------------
// - Establish the connection.
// ---------------------------------------------------------
con = _RepositoryBridge.getSourceDataBaseConnection();
} catch (Exception ex) {
sReturn = Repository._Return_KO;
}
HashMap<String, Object> _hCacheBook = new HashMap<String, Object>();
try {
int iSrcCount = get_RepositoryBridge().cacheQueryData("SELECT TOP(1) * FROM " + Books.Table + " WHERE " + Books.Column_IDNum + "=" + p_sBook_ID, _hCacheBook, "DataBase_Source");
int iColCount = (Integer) (_hCacheBook.get("SQL_ColumnCount"));
String sColDesc = (String) (_hCacheBook.get("SQL_ColumnDesc"));
String sColValues = (String) (_hCacheBook
.get("SQL_ColumnValues"));
int nbrCol = (Integer) (_hCacheBook.get("SQL_ColumnCount"));
String sContentType = "application/vnd.ms-objx";
response.setContentType(sContentType);
ServletOutputStream outStream = new ServletOutputStream() {
@Override
public void write(int arg0) throws IOException {
// TODO Auto-generated method stub
}
};
outStream = response.getOutputStream();
this.CreatXml(nbrCol, 1, _hCacheBook, outStream, response );
outStream.flush();
outStream.close();
}
catch (Exception ex) {
System.out.println("I AM IN THE EXCEPTION :");
ex.printStackTrace();
}
}
catch (Exception e) {
writeServerDebug("ERROR:" + e.getLocalizedMessage());
sReturn = Repository._Return_KO;
}
return sReturn;
}
public ZipOutputStream CreatXml(int nbr_col, int iLineCounter,
HashMap<String, Object> H, ServletOutputStream out , javax.servlet.http.HttpServletResponse response ) throws IOException {
ZipOutputStream zipfile = null;
String BookName = null;
String BookID = null;
int axisID = 11 ;
String TemplateChild = null;
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = null;
try {
writeServerDebug("call function Create XML");
docBuilder = docFactory.newDocumentBuilder();
} catch (ParserConfigurationException e2) {
e2.printStackTrace();
}
// Element : book_objects
String tableName = "book_objects";
org.w3c.dom.Document doc = docBuilder.newDocument();
Element p_tableName = doc.createElement(tableName);
doc.appendChild(p_tableName);
// Element : object
Element p_object = doc.createElement("object");
String []platformeversion = JavaFunctions.convertStringToArray(Repository.Portal_Version, "=");
p_object.setAttribute("version", platformeversion[1]+" "+getVersion());
p_tableName.appendChild(p_object);
String tabCol = (String) (H.get("SQL_ColumnDesc"));
String[] colName = JavaFunctions.convertStringToArray(tabCol, ", ");
String [][]dep = null;
dep = Dependances.sReturnDependance();
String [][]colVal = new String [9][2];
int c=0;
for (int i = 1; i <= nbr_col; i++) {
String columnName = colName[i - 1];
columnName = columnName.replaceAll(" ", "");
columnName = columnName.replace("(", "");
columnName = columnName.replace(")", "");
Element nomChamps = doc.createElement(columnName);
String value = "";
value = "" + H.get(iLineCounter + "_" + i);
if(columnName.equalsIgnoreCase(Books.Column_Name)){
BookName = value;
}
if(columnName.equalsIgnoreCase(Books.Column_IDNum)){
BookID = value;
}
if(columnName.equalsIgnoreCase(Books.Column_axis_main_idnum)){
axisID = (Integer) H.get(iLineCounter + "_" + i);
}
if(columnName.equalsIgnoreCase(Books.Column_Template_Child)){
TemplateChild = (String) H.get(iLineCounter + "_" + i);
}
//retrieve the columns and their values for the dependencies
for(int cpt=0; cpt<5; cpt++){
if(dep[cpt][0].equalsIgnoreCase(columnName)){
colVal[c][0]=columnName;
colVal[c][1]= value;
c++;
}
}
nomChamps.appendChild(doc.createTextNode((String) value));
p_object.appendChild(nomChamps);
}
String label[] = JavaFunctions.convertStringToArray(TemplateChild, "/");
String path = "C:\\Fovea_Repository/output/";
File outputdirectory = new File (path);
// Create the output file
String fileName ="ExportDirectory"+ BookName +".zip";
response.setHeader( "Content-Disposition", "filename=" + fileName );
Transformer tf = null;
try {
tf = TransformerFactory.newInstance().newTransformer();
} catch (TransformerConfigurationException e1) {
e1.printStackTrace();
}
try {
// Format XML
tf.setOutputProperty(OutputKeys.INDENT, "yes");
tf.setOutputProperty(OutputKeys.METHOD, "xml");
tf.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
tf.setOutputProperty("{http://xml.apache.org/xslt}indent-amount","4");
File directory = new File ("C:/Fovea_Repository/ExportDirectory/");
if(!directory.exists()){
directory.delete();
directory.mkdir();
}
DOMSource source = new DOMSource(doc);
StreamResult res = new StreamResult(new File("C:/Fovea_Repository/ExportDirectory/dependance.xml"));
tf.transform(source, res);
//create a zip file (Export_directory)
AppZip appZip = new AppZip();
String sourcefolder = "C:/Fovea_Repository/ExportDirectory";
String outputfoler = " ";
ZipOutputStream returnFile = appZip.ZipFile(outputfoler , sourcefolder , out, BookName , BookID);
zipfile = returnFile;
} catch (TransformerException e) {
e.printStackTrace();
}
return zipfile;
}