 protected void generateClass(String[] smap) throws Exception, JasperException, FileNotFoundException {
long t1 = 0;
if (log.isDebugEnabled()) {
t1 = System.currentTimeMillis();
}
final String sourceFile = ctxt.getServletJavaFileName();
final String outputDir = ctxt.getOptions().getScratchDir().getAbsolutePath();
String packageName = ctxt.getServletPackageName();
final String targetClassName =
((packageName.length() != 0) ? (packageName + ".") : "")
+ ctxt.getServletClassName();
final ClassLoader classLoader = ctxt.getJspLoader();
String[] fileNames = new String[] {sourceFile};
String[] classNames = new String[] {targetClassName};
final ArrayList problemList = new ArrayList();
class CompilationUnit implements ICompilationUnit {
String className;
String sourceFile;
CompilationUnit(String sourceFile, String className) {
this.className = className;
this.sourceFile = sourceFile;
}
public char[] getFileName() {
return sourceFile.toCharArray();
}
public char[] getContents() {
char[] result = null;
FileInputStream is = null;
try {
is = new FileInputStream(sourceFile);
Reader reader =
new BufferedReader(new InputStreamReader(is, ctxt.getOptions().getJavaEncoding()));
if (reader != null) {
char[] chars = new char[8192];
StringBuffer buf = new StringBuffer();
int count;
while ((count = reader.read(chars, 0,
chars.length)) > 0) {
buf.append(chars, 0, count);
}
result = new char[buf.length()];
buf.getChars(0, result.length, result, 0);
}
} catch (IOException e) {
log.error("Compilation error", e);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException exc) {
// Ignore
}
}
}
return result;
}
public char[] getMainTypeName() {
int dot = className.lastIndexOf('.");
if (dot > 0) {
return className.substring(dot + 1).toCharArray();
}
return className.toCharArray();
}
public char[][] getPackageName() {
StringTokenizer izer =
new StringTokenizer(className, ".");
char[][] result = new char[izer.countTokens()-1][];
for (int i = 0; i < result.length; i++) {
String tok = izer.nextToken();
result[i] = tok.toCharArray();
}
return result;
}
}
final INameEnvironment env = new INameEnvironment() {
public NameEnvironmentAnswer
findType(char[][] compoundTypeName) {
String result = "";
String sep = "";
for (int i = 0; i < compoundTypeName.length; i++) {
result += sep;
result += new String(compoundTypeName[i]);
sep = ".";
}
return findType(result);
}
public NameEnvironmentAnswer
findType(char[] typeName,
char[][] packageName) {
String result = "";
String sep = "";
for (int i = 0; i < packageName.length; i++) {
result += sep;
result += new String(packageName[i]);
sep = ".";
}
result += sep;
result += new String(typeName);
return findType(result);
}
private NameEnvironmentAnswer findType(String className) {
InputStream is = null;
try {
if (className.equals(targetClassName)) {
ICompilationUnit compilationUnit =
new CompilationUnit(sourceFile, className);
return
new NameEnvironmentAnswer(compilationUnit, null);
}
String resourceName =
className.replace('.", '/") + ".class";
is = classLoader.getResourceAsStream(resourceName);
if (is != null) {
byte[] classBytes;
byte[] buf = new byte[8192];
ByteArrayOutputStream baos =
new ByteArrayOutputStream(buf.length);
int count;
while ((count = is.read(buf, 0, buf.length)) > 0) {
baos.write(buf, 0, count);
}
baos.flush();
classBytes = baos.toByteArray();
char[] fileName = className.toCharArray();
ClassFileReader classFileReader =
new ClassFileReader(classBytes, fileName,
true);
return
new NameEnvironmentAnswer(classFileReader, null);
}
} catch (IOException exc) {
log.error("Compilation error", exc);
} catch (org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException exc) {
log.error("Compilation error", exc);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException exc) {
// Ignore
}
}
}
return null;
}
private boolean isPackage(String result) {
if (result.equals(targetClassName)) {
return false;
}
String resourceName = result.replace('.", '/") + ".class";
InputStream is =
classLoader.getResourceAsStream(resourceName);
return is == null;
}
public boolean isPackage(char[][] parentPackageName,
char[] packageName) {
String result = "";
String sep = "";
if (parentPackageName != null) {
for (int i = 0; i < parentPackageName.length; i++) {
result += sep;
String str = new String(parentPackageName[i]);
result += str;
sep = ".";
}
}
String str = new String(packageName);
if (Character.isUpperCase(str.charAt(0))) {
if (!isPackage(result)) {
return false;
}
}
result += sep;
result += str;
return isPackage(result);
}
public void cleanup() {
}
};
final IErrorHandlingPolicy policy =
DefaultErrorHandlingPolicies.proceedWithAllProblems();
final Map settings = new HashMap();
settings.put(CompilerOptions.OPTION_LineNumberAttribute,
CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_SourceFileAttribute,
CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_ReportDeprecation,
CompilerOptions.IGNORE);
if (ctxt.getOptions().getJavaEncoding() != null) {
settings.put(CompilerOptions.OPTION_Encoding,
ctxt.getOptions().getJavaEncoding());
}
if (ctxt.getOptions().getClassDebugInfo()) {
settings.put(CompilerOptions.OPTION_LocalVariableAttribute,
CompilerOptions.GENERATE);
}
// Source JVM
if(ctxt.getOptions().getCompilerSourceVM() != null) {
String opt = ctxt.getOptions().getCompilerSourceVM();
if(opt.equals("1.1")) {
settings.put(CompilerOptions.OPTION_Source,
CompilerOptions.VERSION_1_1);
} else if(opt.equals("1.2")) {
settings.put(CompilerOptions.OPTION_Source,
CompilerOptions.VERSION_1_2);
} else if(opt.equals("1.3")) {
settings.put(CompilerOptions.OPTION_Source,
CompilerOptions.VERSION_1_3);
} else if(opt.equals("1.4")) {
settings.put(CompilerOptions.OPTION_Source,
CompilerOptions.VERSION_1_4);
} else if(opt.equals("1.5")) {
settings.put(CompilerOptions.OPTION_Source,
CompilerOptions.VERSION_1_5);
} else {
log.warn("Unknown source VM " + opt + " ignored.");
settings.put(CompilerOptions.OPTION_Source,
CompilerOptions.VERSION_1_5);
}
} else {
// Default to 1.5
settings.put(CompilerOptions.OPTION_Source,
CompilerOptions.VERSION_1_5);
}
// Target JVM
if(ctxt.getOptions().getCompilerTargetVM() != null) {
String opt = ctxt.getOptions().getCompilerTargetVM();
if(opt.equals("1.1")) {
settings.put(CompilerOptions.OPTION_TargetPlatform,
CompilerOptions.VERSION_1_1);
} else if(opt.equals("1.2")) {
settings.put(CompilerOptions.OPTION_TargetPlatform,
CompilerOptions.VERSION_1_2);
} else if(opt.equals("1.3")) {
settings.put(CompilerOptions.OPTION_TargetPlatform,
CompilerOptions.VERSION_1_3);
} else if(opt.equals("1.4")) {
settings.put(CompilerOptions.OPTION_TargetPlatform,
CompilerOptions.VERSION_1_4);
} else if(opt.equals("1.5")) {
settings.put(CompilerOptions.OPTION_TargetPlatform,
CompilerOptions.VERSION_1_5);
settings.put(CompilerOptions.OPTION_Compliance,
CompilerOptions.VERSION_1_5);
} else {
log.warn("Unknown target VM " + opt + " ignored.");
settings.put(CompilerOptions.OPTION_TargetPlatform,
CompilerOptions.VERSION_1_5);
}
} else {
// Default to 1.5
settings.put(CompilerOptions.OPTION_TargetPlatform,
CompilerOptions.VERSION_1_5);
settings.put(CompilerOptions.OPTION_Compliance,
CompilerOptions.VERSION_1_5);
}
final IProblemFactory problemFactory =
new DefaultProblemFactory(Locale.getDefault());
final ICompilerRequestor requestor = new ICompilerRequestor() {
public void acceptResult(CompilationResult result) {
try {
if (result.hasProblems()) {
IProblem[] problems = result.getProblems();
for (int i = 0; i < problems.length; i++) {
IProblem problem = problems[i];
if (problem.isError()) {
String name =
new String(problems[i].getOriginatingFileName());
try {
problemList.add(ErrorDispatcher.createJavacError
(name, pageNodes, new StringBuffer(problem.getMessage()),
problem.getSourceLineNumber(), ctxt));
} catch (JasperException e) {
log.error("Error visiting node", e);
}
}
}
}
if (problemList.isEmpty()) {
ClassFile[] classFiles = result.getClassFiles();
for (int i = 0; i < classFiles.length; i++) {
ClassFile classFile = classFiles[i];
char[][] compoundName =
classFile.getCompoundName();
String className = "";
String sep = "";
for (int j = 0;
j < compoundName.length; j++) {
className += sep;
className += new String(compoundName[j]);
sep = ".";
}
byte[] bytes = classFile.getBytes();
String outFile = outputDir + "/" +
className.replace('.", '/") + ".class";
FileOutputStream fout =
new FileOutputStream(outFile);
BufferedOutputStream bos =
new BufferedOutputStream(fout);
bos.write(bytes);
bos.close();
}
}
} catch (IOException exc) {
log.error("Compilation error", exc);
}
}
};
ICompilationUnit[] compilationUnits =
new ICompilationUnit[classNames.length];
for (int i = 0; i < compilationUnits.length; i++) {
String className = classNames[i];
compilationUnits[i] = new CompilationUnit(fileNames[i], className);
}
Compiler compiler = new Compiler(env,
policy,
settings,
requestor,
problemFactory,
true);
compiler.compile(compilationUnits);
if (!ctxt.keepGenerated()) {
File javaFile = new File(ctxt.getServletJavaFileName());
javaFile.delete();
}
if (!problemList.isEmpty()) {
JavacErrorDetail[] jeds =
(JavacErrorDetail[]) problemList.toArray(new JavacErrorDetail[0]);
errDispatcher.javacError(jeds);
}
if( log.isDebugEnabled() ) {
long t2=System.currentTimeMillis();
log.debug("Compiled " + ctxt.getServletJavaFileName() + " "
+ (t2-t1) + "ms");
}
if (ctxt.isPrototypeMode()) {
return;
}
// JSR45 Support
if (! options.isSmapSuppressed()) {
SmapUtil.installSmap(smap);
}
}
Compile the servlet from .java file to .class file | org.apache.jasper.compiler.Compiler
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