关于正则表达式和json解析的问题

[dongtao1010]

1，首先是关于正则表达式的问题
我想从以下链接中http://m.zongheng.com/h5/chapter/list?bookid=531009
解析出如下图片上那个1801这个数字，记住是数字，旁边的两个汉字不要


2，另外一个题目是关于json解析的，我下面的一段代码运行有误，麻烦高手帮忙看一下，谢谢了！！！

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.swing.text.html.parser.Entity;

import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JacksonTest {
    private ObjectMapper objectMapper = new ObjectMapper();
    
    private static final String json = "{" +
    		"\"ajaxResult\":{\"code\":1,\"message\":\"有数据\"}," +
    		"\"chapterlist\":{\"asc\":0," +
    								"\"chapterCount\":10," +
    								"\"chapters\":" +
    												"[{\"chapterId\":25492068,\"chapterName\":\"正文 第一章：地震\",\"level\":0,\"orderNum\":1,\"tomeId\":1233505}," +
    												"{\"chapterId\":25686707,\"chapterName\":\"正文 第二章：地下\",\"level\":0,\"orderNum\":2,\"tomeId\":1233505}," +
    												"{\"chapterId\":25740084,\"chapterName\":\"正文 第三章：传承\",\"level\":0,\"orderNum\":3,\"tomeId\":1233505}]," +
    								"\"pageNum\":1," +
    								"\"pageSize\":10}}";
 
	public void readJson2Map(){
    	
		try {
			Jsonp jsonData = objectMapper.readValue(json, Jsonp.class); //一直显示这句报错，但是没有抛出具体异常
			System.out.println(jsonData.getAjaxResult().getCode());
	   //     System.out.println(jsonData);
		} catch (JsonParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (JsonMappingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}    
    }
    public static void main(String[] args){
    	JacksonTest test = new JacksonTest();
    	test.readJson2Map();

    }
}

我自己定义的实体类如下

public class Jsonp {

	private AjaxResult ajaxResult;
	private ChapterList chapterList;
	public AjaxResult getAjaxResult() {
		return ajaxResult;
	}
	public void setAjaxResult(AjaxResult ajaxResult) {
		this.ajaxResult = ajaxResult;
	}
	public ChapterList getChapterList() {
		return chapterList;
	}
	public void setChapterList(ChapterList chapterList) {
		this.chapterList = chapterList;
	}
	
	
}

import java.util.List;


public class ChapterList {

	private int asc;
	private int chapterCount;
	private List<Chapters> chapters;
	private int pageNum;
	private int pageSize;
	public int getAsc() {
		return asc;
	}
	public void setAsc(int asc) {
		this.asc = asc;
	}
	public int getChapterCount() {
		return chapterCount;
	}
	public void setChapterCount(int chapterCount) {
		this.chapterCount = chapterCount;
	}
	public List<Chapters> getChapters() {
		return chapters;
	}
	public void setChapters(List<Chapters> chapters) {
		this.chapters = chapters;
	}
	public int getPageNum() {
		return pageNum;
	}
	public void setPageNum(int pageNum) {
		this.pageNum = pageNum;
	}
	public int getPageSize() {
		return pageSize;
	}
	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}
	
	
}

public class Chapters {

	private int chapterId;
	private String chapterName;
	private int level;
	private int orderNum;
	private int tomeId;
	public int getChapterId() {
		return chapterId;
	}
	public void setChapterId(int chapterId) {
		this.chapterId = chapterId;
	}
	public String getChapterName() {
		return chapterName;
	}
	public void setChapterName(String chapterName) {
		this.chapterName = chapterName;
	}
	public int getLevel() {
		return level;
	}
	public void setLevel(int level) {
		this.level = level;
	}
	public int getOrderNum() {
		return orderNum;
	}
	public void setOrderNum(int orderNum) {
		this.orderNum = orderNum;
	}
	public int getTomeId() {
		return tomeId;
	}
	public void setTomeId(int tomeId) {
		this.tomeId = tomeId;
	}
	
	
}

public class AjaxResult {

	private int code;
	private String message;
	public int getCode() {
		return code;
	}
	public void setCode(int code) {
		this.code = code;
	}
	public String getMessage() {
		return message;
	}
	public void setMessage(String message) {
		this.message = message;
	}
	
	public String toString(){
		return this.code +" "+ this.message;
	}
}

[friendmine]

1. 大概的写法 .*目录.*(\d+).* 应该能匹配到相应的 数字。 2.把错误贴出来吧，应该是个很简单的问题，自己努力一下就成了。

[尼古拉斯-全蛋]

Pattern p=Pattern.compile("(\\d+)");   
		Matcher m=p.matcher("第234章");   
		while(m.find()){  
		System.out.println(m.group());   
		}  

[ZiglarXie]

第二个问题 Jsonp是你自己写的类 并不是 json jar中类 所以 那个getValue方法根本不会返回你的类对象

[爱睡觉的阿狸]

我就第一个问题谈谈。我个人觉得第一个问题用正则是没必要的，反而把简单问题复杂化，比如你可以这样解决：

String s = "共1008章";
		s = s.substring(1, s.length() - 1);
		System.out.println(s);

这样就搞定了，是不是很轻松愉快又不用折腾啥正则呢？

[家里敷泥呀]

第二个问题，没有导入Jsonp，可能缺少jar包

[imfang]

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test {
	public static void main(String[] args) {
		String s="<a>目录<span class=\"sf\">(共1804章)</span></a>";
		Pattern p=Pattern.compile(">\\(共(\\d+)章\\)<");
		Matcher m=p.matcher(s);
		if(m.find()){
			System.out.println(m.group(1));
		}
	}
}
运行结果：
1804