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jar file loadpath issue #88

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jar file loadpath issue #88

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090a66e
jar file loadpath issue
n-ando Aug 26, 2021
ffc646d
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n-ando Aug 5, 2021
ec1f10c
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n-ando Aug 6, 2021
a4a887e
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n-ando Aug 7, 2021
9aaafe5
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n-ando Aug 5, 2021
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100 changes: 84 additions & 16 deletions jp.go.aist.rtm.RTC/src/jp/go/aist/rtm/RTC/ModuleManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -238,12 +238,17 @@ public String load(final String moduleName) throws Exception {
"getParent = " + file.getParent());
if(file.isAbsolute()){
URLClassLoader url = createURLClassLoader(file.getParent());
rtcout.println(Logbuf.PARANOID, "url =" + url);
if (fullClassName.endsWith(".jar")) {
rtcout.println(Logbuf.PARANOID, "addURL(" + fullClassName + ")");
addClassPath(url, fullClassName);
}

rtcout.println(Logbuf.PARANOID, "url = " + url);
if(url!=null){
String name = file.getName();
name = getModuleName(name);

rtcout.println(Logbuf.PARANOID, "name =" + name);
rtcout.println(Logbuf.PARANOID, "name = " + name);
StringHolder packageModuleName = new StringHolder();
target = getClassFromName(url,name,packageModuleName);
module_path = packageModuleName.value;
Expand Down Expand Up @@ -295,19 +300,27 @@ public String load(final String moduleName) throws Exception {
private Class getClassFromName(URLClassLoader url,
String name,
StringHolder holder){
rtcout.println(Logbuf.TRACE,
"getClassFromName(url, " + name + ", holder)");
String separator = System.getProperty("file.separator");
Class target = null;

try {
target = url.loadClass(name);
holder.value = name;
} catch (java.lang.NoClassDefFoundError e) {
rtcout.println(Logbuf.PARANOID,
"NoClassDefFound Error exception: getClassFromName => loadClass("+name+") failed.");
String messagetString = e.getMessage();
rtcout.println(Logbuf.PARANOID,
"Exception messageString => " + messagetString);
String key = "wrong name: ";
int index = messagetString.indexOf(key);
String packageName
= messagetString.substring(index+key.length(),
messagetString.length()-1);
rtcout.println(Logbuf.PARANOID,
"Estimated packageName => " + packageName);
URL[] urls = url.getURLs();
java.util.ArrayList al
= new java.util.ArrayList(java.util.Arrays.asList(urls));
Expand All @@ -316,15 +329,21 @@ private Class getClassFromName(URLClassLoader url,
String stringUrl = new String();
try{
stringUrl = urls[ic].toURI().getPath();
rtcout.println(Logbuf.PARANOID,
"stringUrl => " + stringUrl);
}
catch(Exception ex){
continue;
}
int pointer = packageName.lastIndexOf(name);
String stringPackageName = packageName.substring(0, pointer);
rtcout.println(Logbuf.PARANOID,
"stringPackageName => " + stringPackageName);
if(stringUrl.endsWith(stringPackageName)){
int point = stringUrl.lastIndexOf(stringPackageName);
stringPath = stringUrl.substring(0, point);
rtcout.println(Logbuf.PARANOID,
"stringPath => " + stringPath);
File path = new File(stringPath);
try{
URI uri = path.toURI();
Expand All @@ -341,28 +360,36 @@ private Class getClassFromName(URLClassLoader url,

packageName = packageName.replace("/",".");
packageName = packageName.trim();

rtcout.println(Logbuf.PARANOID, "Re-tring getClassFromName");
target = getClassFromName(url,packageName,holder);
} catch (Exception e) {
rtcout.println(Logbuf.PARANOID,
"Unknown exception: getClassFromName => loadClass("+name+") failed.");
String messagetString = e.getMessage();
rtcout.println(Logbuf.PARANOID,
"Exception messageString => " + messagetString);
//
}
return target;
}

/**
* {@.ja モジュール名作成する。}
* {@.ja 名称から拡張子を除去する。}
* {@.en Strip extension from name.}
* <p>
* {@.ja 拡張子を削除する。拡張子jarの場合はモジュール名を付加する}
* {@.ja モジュール名にファイル名が指定された際に拡張子を除去する。}
* {@.en Strip extension from name when a file name specified.}
*/
private String getModuleName(String name){
rtcout.println(Logbuf.TRACE,
"getModuleNmae(" + name + ", urlClassLoader)");
String extensions[] = {".class", ".jar"};
for(int ic=0;ic<extensions.length;++ic){
if(name.endsWith(extensions[ic])){
for (int ic = 0; ic < extensions.length; ++ic) {
if (name.endsWith(extensions[ic])) {
int point = name.lastIndexOf(extensions[ic]);
name = name.substring(0, point);
if(extensions[ic].equals(".jar")){
name = name+"."+name;
}
rtcout.println(Logbuf.DEBUG,
"getModuleName() striped ext => " + name);
break;
}
}
Expand All @@ -388,7 +415,45 @@ private URLClassLoader createURLClassLoader(String parent){
}

/**
* {@.ja モジュールのアンロード。}
* {@.ja クラスパスの追加}
* {@.en Addd class path}
*
* <p>
* {@.ja クラスパスに path を追加し実行中に新たな class や jar を
* ロードできるようにする。addURL()メソッドはprotectedのため、直接
* コールできないのでこのような実装になっている。Java9以降では動作しない。}
* {@.en Adding the path to the classpath to load new classes and
* jar files in runtime. Since addURL() method is protected and
* cannot be called directry, implemented as follows. This scheme
* does not work after Java9.}
*
* @param classLoader
* {@.ja クラスローダー。URLClassLoaderでなければならない。}
* {@.en A class loader. It shall URLClassLoader.}
* @param path
* {@.ja CLASSPATHに追加するパス。}
* {@.en A path to be added to CLASSPATH.}
* @throws ReflectiveOperationException
* {@.ja リフレクション操作が機能しなかった場合にスローされます。}
* {@.en Thrown when the reflection operation doesn't work.}
* @throws MalformedURLException
* {@.ja 不正な形式のURLの場合にスローされます。}
* {@.en Thrown when the malformed URL is specified.}
*/
private void addClassPath(ClassLoader classLoader, String path)
throws ReflectiveOperationException, MalformedURLException
{
if (classLoader instanceof URLClassLoader) {
// URLClassLoaderであることが前提
Method method =
URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
method.setAccessible(true);
// ロードするURLを追加する
method.invoke(classLoader, new File(path).toURI().toURL());
}
}
/**
* {@.ja モジュールのロード。}
* {@.en Load and intialize the module}
*
* <p>
Expand Down Expand Up @@ -435,7 +500,8 @@ public String load(final String moduleName, final String methodName)
}

String module_path = load(moduleName);

rtcout.println(Logbuf.TRACE,
"load(" + moduleName + ") => " + module_path + "done");
Method initMethod = symbol(module_path,methodName);


Expand Down Expand Up @@ -856,7 +922,7 @@ protected void addNewFile(final String fpath,
* {@.en This class is used to filter directory listings
* in the list method of class File.}
*/
private class FilePathFilter implements FilenameFilter{
private class FilePathFilter implements FilenameFilter {
private String m_regex = new String();
public FilePathFilter(String str) {
m_regex = str;
Expand Down Expand Up @@ -1224,8 +1290,6 @@ public boolean accept(java.io.File dir, String name) {
return false;
}
}
private Logbuf rtcout;
private ArrayList<Properties> m_modprofs = new ArrayList<Properties>();
/**
* {@.ja 指定したパス以下に存在するディレクトリを探索する}
* {@.en Searches the directory which exists in below of designated paths.}
Expand Down Expand Up @@ -1260,5 +1324,9 @@ private Vector<String> recursiveDirectory(Vector<String> paths){
}
return result;
}

/**
* private variables
*/
private Logbuf rtcout;
private ArrayList<Properties> m_modprofs = new ArrayList<Properties>();
}