I'm trying to use a FreeMarker template,
Here's my code:
#GET
#Produces(MediaType.APPLICATION_JSON)
#Path("{queue}")
public String test(#PathParam("queue") String qy,
#Context HttpServletRequest request) {
Map<String,Object> model = new HashMap<String,Object>();
String listTemplate = "<HTML><HEAD><STYLE>${css}</STYLE></HEAD><BODY><UL> the queue includes : ${queues}</UL></BODY></HTML>";
String listCss = inMemService.getWebCss("list");
model.put("css", listCss);
String result = null ;
IQueue queue = com.myproject.hc.Main.getHzInstance().getQueue(qy);
// Build the data-model
Object[] array = queue.toArray();
int size = queue.size();
int i;
for (i = 0; i < size ; i ++) {
temp = temp + " " + array [i] + " ";
}
model.put("queues", temp);
Template template ;
try {
template = new Template("process", new StringReader(
listTemplate), new Configuration());
Writer stringWriter = new StringWriter();
template.process(model, stringWriter);
stringWriter.flush();
result = stringWriter.toString();
} catch (IOException e) {
} catch (TemplateException e) {
}
return result;
}
However, when I add to the queue, and go the #Path, I get the following output, which doesn't recognize as HTML:
<HTML><HEAD><STYLE>body {background-color: lightgrey;} h1 {color: black;text-align: left;} p {font-family: verdana;font-size: 20px;}</STYLE></HEAD><BODY><UL> the queue includes : LA NYC </UL></BODY></HTML>
Your HTML is fine, you need to declare in code you are returning HTML (and not JSON).
You should replace #Produces(MediaType.APPLICATION_JSON) with:
#Produces({MediaType.TEXT_HTML})
The #Produces annotation is used to specify the MIME media types or representations a resource can produce and send back to the client.
Related
I have the following xml
<Company>
<Company1>
<Dept>
<Name>M1</Name>
<Employers>10</Employers>
<Product>soap</Product>
<Building>001</Building>
<Compulsory>Yes</Compulsory>
</Dept>
<Dept>
<Name>M2</Name>
<Sub-Name>M2-01</Sub-Name>
<Id>m1001</Id>
<Employers>12</Employers>
<Product>soap-cover</Product>
</Dept>
</Company1>
<OtherDetails>
<DeptOther>
<Name>M3</Name>
<Employers>10</Employers>
<Product>soap-colour</Product>
<Building>001</Building>
<Sub>001-01</Sub>
<Compulsory>Yes</Compulsory>
</DeptOther>
</OtherDetails>
</Company>
I need to read this xml and map each of these element to following POJOs.
Object1 - 'Company' which has attributes 'Company1' and 'OtherDetails'
Object2 - 'Company1' which has attributes 'Dept'
Object3 - 'Dept' which has attributes 'Name', 'Employers' etc.
I'm using org.apache.axiom.om.impl.builder.StAXOMBuilder in order to build the DocumentElement.
I'm using following code,
public static void main(String[] args) throws IOException {
mapXMLtoPOJO(FILE_LOCATION);
}
private static boolean mapXMLtoPOJO(String fileLocation) {
File file = new File(fileLocation);
if (file.exists()) {
OMElement fileElement;
try {
InputStream xmlInputStream = new FileInputStream(file);
fileElement = new StAXOMBuilder(xmlInputStream).getDocumentElement();
} catch (Exception e) {
log.error("Error while parsing XML file : " + file.getAbsolutePath());
return false;
}
elementWriter(fileElement);
} else {
return false;
}
return true;
}
public static void elementWriter(OMElement fileElement){
if(fileElement != null){
Iterator iterator1 = fileElement.getChildElements();
int i = 0;
while (iterator1.hasNext()){
OMElement pp = (OMElement) iterator1.next();
log.info(" -------------- " + i);
log.info(" -0-0-0-0-0-0- " + pp.getLocalName() + " ----- " + pp.getText());
i++;
elementWriter(pp);
}
}
}
which print each of the above elements with their values.
But I couldn't find a way to map each of these elements correctly into the java objects created for each major tag as mentioned above.
Should I be store these values in a hash map and then later put them into the created objects? Or what is the most optimum algorithm to do this?
Any idea on how I could do this would be appreciated.
I'm using apache PDFBox from java, and I have a source PDF with multiple optional content groups. What I am wanting to do is export a version of the PDF that includes only the standard content and the optional content groups that were enabled. It is important for my purposes that I preserve any dynamic aspects of the original.... so text fields are still text fields, vector images are still vector images, etc. The reason that this is required is because I intend to ultimately be using a pdf form editor program that does not know how to handle optional content, and would blindly render all of them, so I want to preprocess the source pdf, and use the form editing program on a less cluttered destination pdf.
I've been trying to find something that could give me any hints on how to do this with google, but to no avail. I don't know if I'm just using the wrong search terms, or if this is just something that is outside of what the PDFBox API was designed for. I rather hope it's not the latter. The info shown here does not seem to work (converting the C# code to java), because despite the pdf I'm trying to import having optional content, there does not seem to be any OC resources when I examine the tokens on each page.
for(PDPage page:pages) {
PDResources resources = page.getResources();
PDFStreamParser parser = new PDFStreamParser(page);
parser.parse();
Collection tokens = parser.getTokens();
...
}
I'm truly sorry for not having any more code to show what I've tried so far, but I've just been poring over the java API docs for about 8 hours now trying to figure out what I might need to do this, and just haven't been able to figure it out.
What I DO know how to do is add text, lines, and images to a new PDPage, but I do not know how to retrieve that information from a given source page to copy it over, nor how to tell which optional content group such information is part of (if any). I am also not sure how to copy form fields in the source pdf over to the destination, nor how to copy the font information over.
Honestly, if there's a web page out there that I wasn't able to find with google with the searches that I tried, I'd be entirely happy to read up more about it, but I am really quite stuck here, and I don't know anyone personally that knows about this library.
Please help.
EDIT:
Trying what I understand from what was suggested below, I've written a loop to examine each XObject on the page as follows:
PDResources resources = pdPage.getResources();
Iterable<COSName> names = resources.getXObjectNames();
for(COSName name:names) {
PDXObject xobj = resources.getXObject(name);
PDFStreamParser parser = new PDFStreamParser(xobj.getStream().toByteArray());
parser.parse();
Object [] tokens = parser.getTokens().toArray();
for(int i = 0;i<tokens.length-1;i++) {
Object obj = tokens[i];
if (obj instanceof COSName && obj.equals(COSName.OC)) {
i++;
Object obj = tokens[i];
if (obj instanceof COSName) {
PDPropertyList props = resources.getProperties((COSName)obj);
if (props != null) {
...
However, after an OC key, the next entry in the tokens array is always an Operator tagged as "BMC". Nowhere am I finding any info that I can recognize from the named optional content groups.
Here's a robust solution for removing marked content blocks (open to feedback if anyone finds anything that isn't working right). You should be able to adjust for OC blocks...
This code properly handles nesting and removal of resources (xobject, graphics state and fonts - easy to add others if needed).
public class MarkedContentRemover {
private final MarkedContentMatcher matcher;
/**
*
*/
public MarkedContentRemover(MarkedContentMatcher matcher) {
this.matcher = matcher;
}
public int removeMarkedContent(PDDocument doc, PDPage page) throws IOException {
ResourceSuppressionTracker resourceSuppressionTracker = new ResourceSuppressionTracker();
PDResources pdResources = page.getResources();
PDFStreamParser pdParser = new PDFStreamParser(page);
PDStream newContents = new PDStream(doc);
OutputStream newContentOutput = newContents.createOutputStream(COSName.FLATE_DECODE);
ContentStreamWriter newContentWriter = new ContentStreamWriter(newContentOutput);
List<Object> operands = new ArrayList<>();
Operator operator = null;
Object token;
int suppressDepth = 0;
boolean resumeOutputOnNextOperator = false;
int removedCount = 0;
while (true) {
operands.clear();
token = pdParser.parseNextToken();
while(token != null && !(token instanceof Operator)) {
operands.add(token);
token = pdParser.parseNextToken();
}
operator = (Operator)token;
if (operator == null) break;
if (resumeOutputOnNextOperator) {
resumeOutputOnNextOperator = false;
suppressDepth--;
if (suppressDepth == 0)
removedCount++;
}
if (OperatorName.BEGIN_MARKED_CONTENT_SEQ.equals(operator.getName())
|| OperatorName.BEGIN_MARKED_CONTENT.equals(operator.getName())) {
COSName contentId = (COSName)operands.get(0);
final COSDictionary properties;
if (operands.size() > 1) {
Object propsOperand = operands.get(1);
if (propsOperand instanceof COSDictionary) {
properties = (COSDictionary) propsOperand;
} else if (propsOperand instanceof COSName) {
properties = pdResources.getProperties((COSName)propsOperand).getCOSObject();
} else {
properties = new COSDictionary();
}
} else {
properties = new COSDictionary();
}
if (matcher.matches(contentId, properties)) {
suppressDepth++;
}
}
if (OperatorName.END_MARKED_CONTENT.equals(operator.getName())) {
if (suppressDepth > 0)
resumeOutputOnNextOperator = true;
}
else if (OperatorName.SET_GRAPHICS_STATE_PARAMS.equals(operator.getName())) {
resourceSuppressionTracker.markForOperator(COSName.EXT_G_STATE, operands.get(0), suppressDepth == 0);
}
else if (OperatorName.DRAW_OBJECT.equals(operator.getName())) {
resourceSuppressionTracker.markForOperator(COSName.XOBJECT, operands.get(0), suppressDepth == 0);
}
else if (OperatorName.SET_FONT_AND_SIZE.equals(operator.getName())) {
resourceSuppressionTracker.markForOperator(COSName.FONT, operands.get(0), suppressDepth == 0);
}
if (suppressDepth == 0) {
newContentWriter.writeTokens(operands);
newContentWriter.writeTokens(operator);
}
}
if (resumeOutputOnNextOperator)
removedCount++;
newContentOutput.close();
page.setContents(newContents);
resourceSuppressionTracker.updateResources(pdResources);
return removedCount;
}
private static class ResourceSuppressionTracker{
// if the boolean is TRUE, then the resource should be removed. If the boolean is FALSE, the resource should not be removed
private final Map<COSName, Map<COSName, Boolean>> tracker = new HashMap<>();
public void markForOperator(COSName resourceType, Object resourceNameOperand, boolean preserve) {
if (!(resourceNameOperand instanceof COSName)) return;
if (preserve) {
markForPreservation(resourceType, (COSName)resourceNameOperand);
} else {
markForRemoval(resourceType, (COSName)resourceNameOperand);
}
}
public void markForRemoval(COSName resourceType, COSName refId) {
if (!resourceIsPreserved(resourceType, refId)) {
getResourceTracker(resourceType).put(refId, Boolean.TRUE);
}
}
public void markForPreservation(COSName resourceType, COSName refId) {
getResourceTracker(resourceType).put(refId, Boolean.FALSE);
}
public void updateResources(PDResources pdResources) {
for (Map.Entry<COSName, Map<COSName, Boolean>> resourceEntry : tracker.entrySet()) {
for(Map.Entry<COSName, Boolean> refEntry : resourceEntry.getValue().entrySet()) {
if (refEntry.getValue().equals(Boolean.TRUE)) {
pdResources.getCOSObject().getCOSDictionary(COSName.XOBJECT).removeItem(refEntry.getKey());
}
}
}
}
private boolean resourceIsPreserved(COSName resourceType, COSName refId) {
return getResourceTracker(resourceType).getOrDefault(refId, Boolean.FALSE);
}
private Map<COSName, Boolean> getResourceTracker(COSName resourceType){
if (!tracker.containsKey(resourceType)) {
tracker.put(resourceType, new HashMap<>());
}
return tracker.get(resourceType);
}
}
}
Helper class:
public interface MarkedContentMatcher {
public boolean matches(COSName contentId, COSDictionary props);
}
Optional Content Groups are marked with BDC and EMC. You will have to navigate through all of the tokens returned from the parser and remove the "section" from the array. Here is some C# Code that was posted a while ago - [1]: How to delete an optional content group alongwith its content from pdf using pdfbox?
I investigated that (converting to Java) but couldn't get it work as expected. I managed to remove the content between BDC and EMC and then save the result using the same technique as the sample but the PDF was corrupted. Perhaps that is my lack of C# Knowledge (related to Tuples etc.)
Here is what I came up with, as I said it doesn't work perhaps you or someone else (mkl, Tilman Hausherr) can spot the flaw.
OCGDelete (PDDocument doc, int pageNum, String OCName) {
PDPage pdPage = (PDPage) doc.getDocumentCatalog().getPages().get(pageNum);
PDResources pdResources = pdPage.getResources();
PDFStreamParser pdParser = new PDFStreamParser(pdPage);
int ocgStart
int ocgLength
Collection tokens = pdParser.getTokens();
Object[] newTokens = tokens.toArray()
try {
for (int index = 0; index < newTokens.length; index++) {
obj = newTokens[index]
if (obj instanceof COSName && obj.equals(COSName.OC)) {
// println "Found COSName at "+index /// Found Optional Content
startIndex = index
index++
if (index < newTokens.size()) {
obj = newTokens[index]
if (obj instanceof COSName) {
prop = pdRes.getProperties(obj)
if (prop != null && prop instanceof PDOptionalContentGroup) {
if ((prop.getName()).equals(delLayer)) {
println "Found the Layer to be deleted"
println "prop Name was " + prop.getName()
index++
if (index < newTokens.size()) {
obj = newTokens[index]
if ((obj.getName()).equals("BDC")) {
ocgStart = index
println("OCG Start " + ocgStart)
ocgLength = -1
index++
while (index < newTokens.size()) {
ocgLength++
obj = newTokens[index]
println " Loop through relevant OCG Tokens " + obj
if (obj instanceof Operator && (obj.getName()).equals("EMC")) {
println "the next obj was " + obj
println "after that " + newTokens[index + 1] + "and then " + newTokens[index + 2]
println("OCG End " + ocgLength++)
break
}
index++
}
if (endIndex > 0) {
println "End Index was something " + (startIndex + ocgLength)
}
}
}
}
}
}
}
}
}
}
catch (Exception ex){
println ex.message()
}
for (int i = ocgStart; i < ocgStart+ ocgLength; i++){
newTokens.removeAt(i)
}
PDStream newContents = new PDStream(doc);
OutputStream output = newContents.createOutputStream(COSName.FLATE_DECODE);
ContentStreamWriter writer = new ContentStreamWriter(output);
writer.writeTokens(newTokens);
output.close();
pdPage.setContents(newContents);
}
I wrote a code to find all URLs within a PDF file and replace the one(s) that matches the parameters that was passed from a PHP script.
It is working fine when a single URL is passed. But I don't know how to handle more than one URL, I'm guessing I would need a loop that reads the array length, and call the changeURL method passing the correct parameters.
I actually made it work with if Statements (if myarray.lenght < 4 do this, if it is < 6, do that, if < 8.....), but I am guessing this is not the optimal way. So I removed it and want to try something else.
Parameters passed from PHP (in this order):
args[0] - Location of original PDF
args[1] - Location of new PDF
args[2] - URL 1 (URL to be changed)
args[3] - URL 1a (URL that will replace URL 1)
args[4] - URL 2 (URL to be changed)
args[5] - URL 2a - (URL that will replace URL 2)
args...
and so on... up to maybe around 16 args, depending on how many URLs the PDF file contains.
Here's the code:
Main.java
public class Main {
public static void main(String[] args) {
if (args.length >= 4) {
URLReplacer.changeURL(args);
} else {
System.out.println("PARAMETER MISSING FROM PHP");
}
}
}
URLReplacer.java
public class URLReplacer {
public static void changeURL(String... a) {
try (PDDocument doc = PDDocument.load(a[0])) {
List<?> allPages = doc.getDocumentCatalog().getAllPages();
for (int i = 0; i < allPages.size(); i++) {
PDPage page = (PDPage) allPages.get(i);
List annotations = page.getAnnotations();
for (int j = 0; j < annotations.size(); j++) {
PDAnnotation annot = (PDAnnotation) annotations.get(j);
if (annot instanceof PDAnnotationLink) {
PDAnnotationLink link = (PDAnnotationLink) annot;
PDAction action = link.getAction();
if (action instanceof PDActionURI) {
PDActionURI uri = (PDActionURI) action;
String oldURL = uri.getURI();
if (a[2].equals(oldURL)) {
//System.out.println("Page " + (i + 1) + ": Replacing " + oldURL + " with " + a[3]);
uri.setURI(a[3]);
}
}
}
}
}
doc.save(a[1]);
} catch (IOException | COSVisitorException e) {
e.printStackTrace();
}
}
}
I have tried all sort of loops, but with my limited Java skills, did not achieve any success.
Also, if you notice any dodgy code, kindly let me know so I can learn the best practices from more experienced programmers.
Your main problem - as I understand -, is the "variable number of variables". And you have to send from PHP to JAVA.
1 you can transmit one by one as your example
2 or, in a structure.
there are several structures.
JSON is rather simple at PHP: multiple examples here:
encode json using php?
and for java you have: Decoding JSON String in Java.
or others (like XML , which seems too complex for this).
I'd structure your method to accept specific parameters. I used map to accept URLs, a custom object would be another option.
Also notice the way loops are changed, might give you a hint on some Java skills.
public static void changeURL(String originalPdf, String targetPdf, Map<String, String> urls ) {
try (PDDocument doc = PDDocument.load(originalPdf)) {
List<PDPage> allPages = doc.getDocumentCatalog().getAllPages();
for(PDPage page: allPages){
List annotations = page.getAnnotations();
for(PDAnnotation annot : page.getAnnotations()){
if (annot instanceof PDAnnotationLink) {
PDAnnotationLink link = (PDAnnotationLink) annot;
PDAction action = link.getAction();
if (action instanceof PDActionURI) {
PDActionURI uri = (PDActionURI) action;
String oldURL = uri.getURI();
for (Map.Entry<String, String> url : urls.entrySet()){
if (url.getKey().equals(oldURL)) {
uri.setURI(url.getValue());
}
}
}
}
}
}
doc.save(targetPdf);
} catch (IOException | COSVisitorException e) {
e.printStackTrace();
}
}
If you have to get the URL and PDF locations from command line, then call the changeURL function like this:
public static void main(String[] args) {
if (args.length >= 4) {
String originalPdf = args[0];
String targetPdf = args[1];
Map<String, String> urls = new HashMap<String, String>();
for(int i = 2; i< args.length; i+=2){
urls.put(args[i], args[i+1]);
}
URLReplacer.changeURL(originalPdf, targetPdf, urls);
} else {
System.out.println("PARAMETER MISSING FROM PHP");
}
}
Of the top of my head, you could do something like this
public static void main(String[] args) {
if (args.length >= 4 && args.length % 2 == 0) {
for(int i = 2; i < args.length; i += 2) {
URLReplacer.changeURL(args[0], args[1], args[i], args[i+1]);
args[0] = args[1];
}
} else {
System.out.println("PARAMETER MISSING FROM PHP");
}
}
i want read JSP page and write it to HTML page. I have 3 method in parse class. first readHTMLBody(), second WriteNewHTML(), third ZipToEpub().
When I called this method in parse class, all method work. But called in JSP or webservice UTF-8 character looks like "?" in readHTMLBody(). How can I fix it?
public String readHTMLBody() {
try {
String url = "http://localhost:8080/Library/part.jsp";
Document doc = Jsoup.parse((new URL(url)).openStream(), "utf-8", url);
String body = doc.html();
Elements title = doc.select("xxx");
linkURI = title.toString();
linkURI = linkURI.replaceAll("<xxx>", "");
linkURI = linkURI.replaceAll("</xxx>", "");
linkURI = linkURI.replaceAll("\\s", "");
resultBody = body;
resultBody = resultBody.replaceAll("part/" + linkURI + "/assets/", "assets/");
} catch (IOException e) {
}
return resultBody;
}
I am trying to create a restful web service that will email data from a form. The form can have a variable number of fields and will include a file. I tried using a MultivaluedMap to hold the form entries due to the variable number of fields but if I add a FormParam for the file, the MultivaluedMap no longer gets the entries.
Here is the code I was trying to make:
#POST
#Path("/formEmailerAttachment/{formGuid}")
public Response emailFormAttachment(#PathParam("Guid") long configId, MultivaluedMap<String, String> values, #FormParam("file") File file){
Response.ResponseBuilder builder = null;
Form form = new Form();
form.setValues(values);
try{
if (values.isEmpty())
throw new NullPointerException();
builder = Response.ok();
Iterator iterator = form.getValues().entrySet().iterator();
StringBuilder sBuilder = new StringBuilder();
sBuilder.append("<h3>Success</h3><br>file = " + file.getName());
while (iterator.hasNext()){
Map.Entry pairs = (Map.Entry)iterator.next();
sBuilder.append(pairs.getKey() + " = " + pairs.getValue() + "<br>");
}
builder.entity(sBuilder.toString());
} catch(Exception e) {
builder = Response.serverError();
builder.entity("<h3>Some Error Occured</h3><br>" + e.getMessage());
}
return builder.build();
}
The code results in a NullPointerError. Is it possible to do something along these lines or would I have to make a separate service to handle the file?