解析Android中大xml文件 [英] Parse big xml file in android
问题描述
在我的应用程序有一个搜索选项。如果用户输入搜索值,我得从WebService的值。我得到一个大的web服务的价值。在我的web服务的字符串值都来了。我越来越喜欢<>如XML字符实体引用等。我想替换所有字符和解析XML。谁能告诉我如何做到这一点,举个例子?
In my application there is a search option. If the user enters a search value, I have to get a value from the webservice. I am getting a large webservice value. In my webservice string values are coming. I am getting like <> like xml character entity reference like. I want to replace all characters and parse xml. Can anybody tell me how to do this and give an example?
我用的StringBuffer
试过unescapexml的性格,我得到了内存不足的错误
I tried with StringBuffer
for unescapexml character, I am getting out of memory error
public String unescapeXML(String str) {
if (str == null || str.length() == 0)
return "";
StringBuffer buf = new StringBuffer();
int len = str.length();
for (int i = 0; i < len; ++i) {
char c = str.charAt(i);
if (c == '&') {
int pos = str.indexOf(";", i);
if (pos == -1) { // Really evil
buf.append('&');
} else if (str.charAt(i + 1) == '#') {
int val = Integer.parseInt(str.substring(i + 2, pos), 16);
buf.append((char) val);
i = pos;
} else {
String substr = str.substring(i, pos + 1);
if (substr.equals("&"))
buf.append('&');
else if (substr.equals("<"))
buf.append('<');
else if (substr.equals(">"))
buf.append('>');
else if (substr.equals("""))
buf.append('"');
else if (substr.equals("'"))
buf.append('\'');
else if (substr.equals(" "))
buf.append(" ");
else
// ????
buf.append(substr);
i = pos;
}
} else {
buf.append(c);
}
}
return buf.toString();
}
我试过流,我无法做到这一点。任何人都可以举一个例子,如何做到这一点?
I tried with stream, I am not able to do it. Can anybody give an example how to do this?
推荐答案
您不应该分析它,你自己的。有更好的方法 - SAX或DOM。
这个资源包含了很多关于这两种方式有用inforamtion(以及code例子太):的 http://onjava.com/pub/a/onjava/2002/06/26/xml.html
You should not parse it on your own. There are better ways - SAX or DOM. This resource contains a lot of useful inforamtion about these both ways (and code examples too): http://onjava.com/pub/a/onjava/2002/06/26/xml.html
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