【www.bbyears.com--中文酷站】
利用heritrix做网络爬虫，当选择以镜像方式存储heritrix下的文档时，如果URL中存在中文或者访问的文件名是中文时，在下载文件的镜像目录路径就会有乱码（如下图）。
在解决此问题前先看看为何会出现乱码。
解决方案就是在其创建路径时对路径名进行编码，主要代码在org.archive.crawler.writer. MirrorWriterProcessor类下的方法LumpyString方法。
为了尊重源码，我没有对原来的方法进行改动，新建了org.archive.crawler.writer. MirrorWriterForWenwuchinaProcessor类，来对heritrix进行扩展。复制了org.archive.crawler.writer. MirrorWriterProcessor类中所有代码，并对LumpyString进行必要的改动。如下（红色为修改的部分）
代码如下LumpyString(String str, int beginIndex, int endIndex, int padding,
int maxLen, Map characterMap, String dotBegin) {
if (beginIndex < 0) {
throw new IllegalArgumentException("beginIndex < 0: "
+ beginIndex);
}
if (endIndex < beginIndex) {
throw new IllegalArgumentException("endIndex < beginIndex "
+ "beginIndex: " + beginIndex + "endIndex: " + endIndex);
}
if (padding < 0) {
throw new IllegalArgumentException("padding < 0: " + padding);
}
if (maxLen < 1) {
throw new IllegalArgumentException("maxLen < 1: " + maxLen);
}
if (null == characterMap) {
throw new IllegalArgumentException("characterMap null");
}
if ((null != dotBegin) && (0 == dotBegin.length())) {
throw new IllegalArgumentException("dotBegin empty");
}
// Initial capacity. Leave some room for %XX lumps.
// Guaranteed positive.
int cap = Math.min(2 * (endIndex - beginIndex) + padding + 1,
maxLen);
string = new StringBuffer(cap);
aux = new byte[cap];
for (int i = beginIndex; i != endIndex; ++i) {
String s=str.substring(i, i + 1);
try {
s = new String(s.getBytes(),"GB2312");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String lump; // Next lump.
if (".".equals(s) && (i == beginIndex) && (null != dotBegin)) {
lump = dotBegin;
} else {
lump = (String) characterMap.get(s);
}
if (null == lump) {
if ("%".equals(s) && ((endIndex - i) > 2)
&& (-1 != Character.digit(str.charAt(i + 1), 16))
&& (-1 != Character.digit(str.charAt(i + 2), 16))) {
// %XX escape; treat as one lump.
lump = str.substring(i, i + 3);
i += 2;
} else {
lump = s;
}
}
if ((string.length() + lump.length()) > maxLen) {
assert checkInvariants();
return;
}
append(lump);
}
assert checkInvariants();
}