处理编码

EricsHu

2022-12-05 068fc7f2e81178e55fa191a13709af64b1a163f6

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package com.qxueyou.scc.exercise.service.impl.parser;
 
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
import org.apache.commons.lang3.StringUtils;
 
import com.qxueyou.scc.exercise.service.impl.Node;
import com.qxueyou.scc.exercise.service.impl.ParseResult;
import com.qxueyou.scc.exercise.service.impl.Parser;
import com.qxueyou.scc.exercise.service.impl.node.Item;
 
public class ItemAnswerParser extends Parser {
    
    /**
     * 参考答案[带括号]
     */
    private static final String answerWithBracketsStr = "\\([ABCDEFGHIJKLMNOabcdefghijklmno√╳×TFtf]+\\)";
    
    /**
     * 参考答案
     */
    private static final String answerStr = "[ABCDEFGHIJKLMNOabcdefghijklmno√╳×TFtf]+";
    
    /**
     * 参考答案模式[带括号]
     */
    private static final Pattern answerWithBrackets = Pattern.compile(answerWithBracketsStr);
    
    /**
     * 参考答案模式
     */
    private static final Pattern answer = Pattern.compile(answerStr);
 
    @Override
    public ParseResult parse(Node node, String str) {
        return parseAnswer((Item)node,str);
    }
    
    /**
     * 解析 Item 参考答案
     * 1.解析出类似  *** ( ab ) 这样的参考答案
     * 2.将类似参考答案 ( ab ) 替换成 ( )
     * @param item
     * @param str
     * @return
     */
    private ParseResult parseAnswer(Item item, String str) {
        
        //习题选项
        Matcher answerBracketsMatch = answerWithBrackets.matcher(str);
        
        //返回
        if(!answerBracketsMatch.find() || answerBracketsMatch.start()==0){
            return new ParseResult(false,ParseResult.STEP_CUR,null);
        }
        
        Matcher answerMatch = null;
        
        answerBracketsMatch.reset();
        if(answerBracketsMatch.find()){
            
            String answerBrackets = answerBracketsMatch.group();
            answerMatch = answer.matcher(answerBrackets);
            answerMatch.find();
            
            String answer = answerMatch.group();
            
            item.setAnswer(dealAnswer(answer.toUpperCase()));
            item.setTitle(item.getTitle().replaceAll(answerWithBracketsStr, "( )"));
        }
        
        //20150907修改：本来返回true，没有解析到一个类型，抛到上层
        return new ParseResult(false,ParseResult.STEP_PRE,null);
        
    }
    
    /**
     * 处理answer
     * @param answer
     * @return
     */
    private String dealAnswer(String answer){
        if(StringUtils.equalsIgnoreCase("√",answer)||StringUtils.equalsIgnoreCase("√",answer)||StringUtils.equalsIgnoreCase("T",answer)){
            return "True";
        }
        if(StringUtils.equalsIgnoreCase("×",answer)||StringUtils.equalsIgnoreCase("╳",answer)||StringUtils.equalsIgnoreCase("F",answer)){
            return "False";
        }
        return answer;
    }
}