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Tomosa Sarkar
2025-07-28 13:56:49 +05:30
commit e9eb805edb
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hrmsEjb/net/sf/jasperreports/engine/util/JRLoader.java Normal file
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package net.sf.jasperreports.engine.util;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLStreamHandlerFactory;
import net.sf.jasperreports.engine.JRException;
public class JRLoader {
public static Object loadObject(String fileName) throws JRException {
return loadObject(new File(fileName));
}
public static Object loadObject(File file) throws JRException {
if (!file.exists() || !file.isFile())
throw new JRException(new FileNotFoundException(String.valueOf(file)));
Object obj = null;
FileInputStream fis = null;
ObjectInputStream ois = null;
try {
fis = new FileInputStream(file);
BufferedInputStream bufferedIn = new BufferedInputStream(fis);
ois = new ObjectInputStream(bufferedIn);
obj = ois.readObject();
} catch (IOException e) {
throw new JRException("Error loading object from file : " + file, e);
} catch (ClassNotFoundException e) {
throw new JRException("Class not found when loading object from file : " + file, e);
} finally {
if (ois != null)
try {
ois.close();
} catch (IOException e) {}
if (fis != null)
try {
fis.close();
} catch (IOException e) {}
}
return obj;
}
public static Object loadObject(URL url) throws JRException {
Object obj = null;
InputStream is = null;
ObjectInputStream ois = null;
try {
is = url.openStream();
ois = new ObjectInputStream(is);
obj = ois.readObject();
} catch (IOException e) {
throw new JRException("Error loading object from URL : " + url, e);
} catch (ClassNotFoundException e) {
throw new JRException("Class not found when loading object from URL : " + url, e);
} finally {
if (ois != null)
try {
ois.close();
} catch (IOException e) {}
if (is != null)
try {
is.close();
} catch (IOException e) {}
}
return obj;
}
public static Object loadObject(InputStream is) throws JRException {
Object obj = null;
ObjectInputStream ois = null;
try {
ois = new ObjectInputStream(is);
obj = ois.readObject();
} catch (IOException e) {
throw new JRException("Error loading object from InputStream", e);
} catch (ClassNotFoundException e) {
throw new JRException("Class not found when loading object from InputStream", e);
} finally {
if (ois != null)
try {
ois.close();
} catch (IOException e) {}
}
return obj;
}
public static Object loadObjectFromLocation(String location) throws JRException {
return loadObjectFromLocation(location, null, null, null);
}
public static Object loadObjectFromLocation(String location, ClassLoader classLoader) throws JRException {
return loadObjectFromLocation(location, classLoader, null, null);
}
public static Object loadObjectFromLocation(String location, ClassLoader classLoader, URLStreamHandlerFactory urlHandlerFactory, FileResolver fileResolver) throws JRException {
URL url = JRResourcesUtil.createURL(location, urlHandlerFactory);
if (url != null)
return loadObject(url);
File file = JRResourcesUtil.resolveFile(location, fileResolver);
if (file != null)
return loadObject(file);
url = JRResourcesUtil.findClassLoaderResource(location, classLoader, JRLoader.class);
if (url != null)
return loadObject(url);
throw new JRException("Could not load object from location : " + location);
}
public static byte[] loadBytes(File file) throws JRException {
ByteArrayOutputStream baos = null;
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
baos = new ByteArrayOutputStream();
byte[] bytes = new byte[10000];
int ln = 0;
while ((ln = fis.read(bytes)) > 0)
baos.write(bytes, 0, ln);
baos.flush();
} catch (IOException e) {
throw new JRException("Error loading byte data : " + file, e);
} finally {
if (baos != null)
try {
baos.close();
} catch (IOException e) {}
if (fis != null)
try {
fis.close();
} catch (IOException e) {}
}
return baos.toByteArray();
}
public static byte[] loadBytes(URL url) throws JRException {
ByteArrayOutputStream baos = null;
InputStream is = null;
try {
is = url.openStream();
baos = new ByteArrayOutputStream();
byte[] bytes = new byte[10000];
int ln = 0;
while ((ln = is.read(bytes)) > 0)
baos.write(bytes, 0, ln);
baos.flush();
} catch (IOException e) {
throw new JRException("Error loading byte data : " + url, e);
} finally {
if (baos != null)
try {
baos.close();
} catch (IOException e) {}
if (is != null)
try {
is.close();
} catch (IOException e) {}
}
return baos.toByteArray();
}
public static byte[] loadBytes(InputStream is) throws JRException {
ByteArrayOutputStream baos = null;
try {
baos = new ByteArrayOutputStream();
byte[] bytes = new byte[10000];
int ln = 0;
while ((ln = is.read(bytes)) > 0)
baos.write(bytes, 0, ln);
baos.flush();
} catch (IOException e) {
throw new JRException("Error loading byte data from input stream.", e);
} finally {
if (baos != null)
try {
baos.close();
} catch (IOException e) {}
}
return baos.toByteArray();
}
public static byte[] loadBytesFromLocation(String location) throws JRException {
return loadBytesFromLocation(location, null, null, null);
}
public static byte[] loadBytesFromLocation(String location, ClassLoader classLoader) throws JRException {
return loadBytesFromLocation(location, classLoader, null, null);
}
public static byte[] loadBytesFromLocation(String location, ClassLoader classLoader, URLStreamHandlerFactory urlHandlerFactory) throws JRException {
return loadBytesFromLocation(location, classLoader, urlHandlerFactory, null);
}
public static byte[] loadBytesFromLocation(String location, ClassLoader classLoader, URLStreamHandlerFactory urlHandlerFactory, FileResolver fileResolver) throws JRException {
URL url = JRResourcesUtil.createURL(location, urlHandlerFactory);
if (url != null)
return loadBytes(url);
File file = JRResourcesUtil.resolveFile(location, fileResolver);
if (file != null)
return loadBytes(file);
url = JRResourcesUtil.findClassLoaderResource(location, classLoader, JRLoader.class);
if (url != null)
return loadBytes(url);
throw new JRException("Byte data not found at location : " + location);
}
public static InputStream getLocationInputStream(String location) throws JRException {
InputStream is = null;
is = getResourceInputStream(location);
if (is == null)
is = getFileInputStream(location);
if (is == null)
is = getURLInputStream(location);
return is;
}
public static InputStream getFileInputStream(String filename) throws JRException {
InputStream is = null;
File file = new File(filename);
if (file.exists() && file.isFile())
try {
is = new FileInputStream(file);
} catch (FileNotFoundException e) {
throw new JRException("Error opening file " + filename);
}
return is;
}
public static InputStream getResourceInputStream(String resource) {
InputStream is = null;
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
if (classLoader != null)
is = classLoader.getResourceAsStream(resource);
if (is == null) {
classLoader = JRLoader.class.getClassLoader();
if (classLoader != null)
is = classLoader.getResourceAsStream(resource);
if (is == null)
is = JRProperties.class.getResourceAsStream("/" + resource);
}
return is;
}
public static InputStream getURLInputStream(String spec) throws JRException {
InputStream is = null;
try {
URL url = new URL(spec);
is = url.openStream();
} catch (MalformedURLException e) {
} catch (IOException e) {
throw new JRException("Error opening URL " + spec);
}
return is;
}
}