java字符串解析与map集合的遍历

package traversemap;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

public class TraverseMap {

public static Map<String, String> transformXmlToMap(String xml) {

Map<String, String> map = new HashMap<String, String>();
try {
String[] tokens = xml.trim().substring(5, xml.trim().length() - 3)
.split("\"");//注意是以引号来切分字符串  \是转义字符
System.out.println("this is blong to transformxmltomap function  1");
for(int i=0;i<tokens.length-1;i++){
System.out.println("分词后第"+i+"个元素");
System.out.println(tokens[i]);
}

String tokens2=xml.trim().substring(5, xml.trim().length() - 3);//减1意味着最后一个 再减2去掉了"/>"  索引5开始去掉了"<row "

System.out.println("this is blong to transformxmltomap function  2");
System.out.println("tokens2"+tokens2);

for (int i = 0; i < tokens.length - 1; i += 2) {
String key = tokens[i].trim();//去除字符首尾的空格
System.out.print("key:"+key+"---");//打印发现key有带一个等号的
String val = tokens[i + 1];
System.out.println("value:"+val);

map.put(key.substring(0, key.length() - 1), val);//key.length() - 1)把key中最后一个字符给去掉   最后一个字符是"="

}

}
catch (StringIndexOutOfBoundsException e) {
System.err.println(xml);
}

return map;
}

public static void main(String[] args) {
// TODO Auto-generated method stub
String ss="  <row Id=\"1\" PostId=\"7\" Score=\"2\" Text=\"Just ask @Robert how annoying this can be...\" CreationDate=\"2010-06-30T19:29:03.500\" UserId=\"17\" />";
Map<String, String> parsed=transformXmlToMap(ss);

System.out.println("   遍历map    ");

Iterator<Entry<String, String>> entries = parsed.entrySet().iterator();

while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
String key = (String)entry.getKey();
String value = (String)entry.getValue();
System.out.println("Key = " + key + ", Value = " + value);
}

}

}