围棋棋谱一般被保存为sgf格式，要想在自己的网站中实现打谱功能，必要要会解析sgf文件，取出里面的对局信息和落子，楼主现在用一种比较简单的方法来解析它

说明:楼主所用的棋谱是从新浪围棋里下载来的，示例用的是第10届中国围棋龙星战半决赛江维杰VS辜梓豪

文件内容如下（其他sgf格式也差不多，就是有些字段的名字换了一下)

(
TE[第10届中国围棋龙星战半决赛]
RD[2019-05-28]
PC[中国]
TM[0]
LT[30]
LC[10]
KO[7.5]
RE[黑中盘胜]
PB[江维杰]
BR[九段]
PW[辜梓豪]
WR[九段]
GK[1]
TC[];B[pd];W[dp];B[qp];W[dd];B[np];W[qc];B[qd];W[pc];B[nc];W[oc];B[od];W[nb];B[fq];W[hq]
;B[cc];W[cd];B[dc];W[ec];B[eb];W[fb];B[fc];W[ed];B[gb];W[db];B[fa];W[cb];B[fo];W[dm]
;B[jq];W[jp];B[kp];W[ip];B[ko];W[kq];B[kr];W[lq];B[ir];W[pp];B[po];W[qo];B[pq];W[hr]
;B[mq];W[in];B[bc];W[bb];B[er];W[dq];B[gn];W[il];B[gl];W[dk];B[cr];W[dr];B[ds];W[bq]
;B[el];W[dl];B[en];W[ij];B[fj];W[di];B[qn];W[fh];B[jk];W[ik];B[im];W[jm];B[hm];W[jo]
;B[jl];W[kn];B[lp];W[kl];B[kk];W[ll];B[lk];W[lo];B[lr];W[mk];B[ki];W[nl];B[hi];W[ni]
;B[mm];W[ml];B[jh];W[mc];B[nd];W[rc];B[pi];W[pk];B[ef];W[fd];B[lm];W[km];B[cg];W[ff]
;B[co];W[cn];B[cp];W[cq];B[do];W[bo];B[bk];W[bl];B[ci];W[gj];B[dh];W[gi];B[dj];W[ei]
;B[ej];W[ck];B[hh];W[gk];B[fg];W[eg];B[gg];W[eh];B[gh];W[fi];B[df];W[dg];B[ch];W[cf]
;B[bf];W[ce];B[fe];W[gf];B[ge];W[hf];B[ee];W[ig];B[hj];W[hk];B[ii];W[hc];B[gd];W[gc]
;B[hd];W[id];B[ic];W[fb];B[ie];W[jd];B[fc];W[hb];B[he];W[je];B[if];W[jf];B[hg];W[ng]
;B[qg];W[qj];B[md];W[lc];B[ob];W[mb];B[rd])

需要的属性说明如下

[TE]:比赛标题

[RD]比赛时间

[PC]比赛地点

[KO]贴目

[RE]比赛结果

[PB]黑方姓名

[BR]黑方水平(职业)

[PW]白方名字

[WR]白方水平

;B[]黑方落子坐标

;W[]白棋落子坐标

实现

1.先创建一个落子类，属性是落子的颜色、x坐标，与坐标以及步数

public class Point {private String color;private int x;private int y;private int step;public Point() {super();// TODO Auto-generated constructor stub}public Point(String color, int x, int y,int step) {super();this.color = color;this.x = x;this.y = y;this.step = step;}public String getColor() {return color;}public void setColor(String color) {this.color = color;}public int getX() {return x;}public void setX(int x) {this.x = x;}public int getY() {return y;}public void setY(int y) {this.y = y;}public int getStep() {return step;}public void setStep(int step) {this.step = step;}}

2.创建棋谱类，记录所有信息

//棋谱
public class ChessManual {private int manualid;private String title;// 比赛private String time;// 比赛时间private String dict;// 地点private float tiemu;// 贴目private String result;// 结果private String blackName;// 黑方private String blacklevel;// 黑方水平private String whiteName;// 白方private String whitelevel;// 白方水平private List<Point> playList;// 落子顺序public ChessManual() {super();// TODO Auto-generated constructor stub}public ChessManual(String title, String time, String dict, float tiemu, String result, String blackName,String blacklevel, String whiteName, String whitelevel) {super();this.title = title;this.time = time;this.dict = dict;this.tiemu = tiemu;this.result = result;this.blackName = blackName;this.blacklevel = blacklevel;this.whiteName = whiteName;this.whitelevel = whitelevel;}public ChessManual(int manualid, String title, String time, String dict, float tiemu, String result,String blackName, String blacklevel, String whiteName, String whitelevel) {super();this.manualid = manualid;this.title = title;this.time = time;this.dict = dict;this.tiemu = tiemu;this.result = result;this.blackName = blackName;this.blacklevel = blacklevel;this.whiteName = whiteName;this.whitelevel = whitelevel;}public int getManualid() {return manualid;}public void setManualid(int manualid) {this.manualid = manualid;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getTime() {return time;}public void setTime(String time) {this.time = time;}public String getDict() {return dict;}public void setDict(String dict) {this.dict = dict;}public float getTiemu() {return tiemu;}public void setTiemu(float tiemu) {this.tiemu = tiemu;}public String getResult() {return result;}public void setResult(String result) {this.result = result;}public String getBlackName() {return blackName;}public void setBlackName(String blackName) {this.blackName = blackName;}public String getBlacklevel() {return blacklevel;}public void setBlacklevel(String blacklevel) {this.blacklevel = blacklevel;}public String getWhiteName() {return whiteName;}public void setWhiteName(String whiteName) {this.whiteName = whiteName;}public String getWhitelevel() {return whitelevel;}public void setWhitelevel(String whitelevel) {this.whitelevel = whitelevel;}public List<Point> getPlayList() {return playList;}public void setPlayList(List<Point> playList) {this.playList = playList;}}

3.解析类

1.取内容函数:取到指定路径文件里的所有内容

//拿到文件内容public String getContent(String path) throws IOException {String result="";FileReader reader = new FileReader(path);BufferedReader br = new BufferedReader(reader);String line;while ((line = br.readLine()) != null) {result+=line;}return result;}

如果是网络文件，就通过url拿到

//拿到文件内容public String getContent(String path) throws IOException {URL url =new URL(path); // 创建URLURLConnection urlconn = url.openConnection(); // 试图连接并取得返回状态码urlconn.connect();HttpURLConnection httpconn =(HttpURLConnection)urlconn;String result="";InputStreamReader reader = new InputStreamReader(urlconn.getInputStream(),"GBK");BufferedReader br = new BufferedReader(reader); // 建立一个对象，它把文件内容转成计算机能读懂的语言String line;//网友推荐更加简洁的写法while ((line = br.readLine()) != null) {result+=line;}return result;}

2.我们发现文件的有效信息都在 ’[‘ 和 ’]‘ 里,而且 '['前面都带有表明内容含义的字段，因此我们需要做的是取一个字符串中指定开头字符和指定结尾字符中间的子字符串集合，因此我用了正则表达式来取

public static List<String> getStrContainData(String str, String start, String end){List<String> result = new ArrayList<>();String regex = start + "(.*?)" + end;Pattern pattern = Pattern.compile(regex);Matcher matcher = pattern.matcher(str);while(matcher.find()){String key = matcher.group(1);if(!key.contains(start) && !key.contains(end)){result.add(key);}}return result;}

3.有了这个方法，那取信息就很方便了

比如取标题是这样

ChessManual chessManual = new ChessManual();
//取比赛标题
List<String> result1 = getStrContainData(content, "TE\\[", "\\]");
for(String key : result1) {chessManual.setTitle(key);
}

后面都差不多，最后讲讲取下棋步骤，列表中的每一项都是两个英文字母，而棋盘排列是从a开始的，因此只要求出两个字母在26个英文字母的位置即可得到坐标

楼主这里先取所有黑棋下的，在取白棋下棋，由于每个点都带有下棋步数，因此只需要这个list按下棋步数排列即可

//落子String s = "abcdefghijklmnopqrstuvwxyz";List<Point> moves = new ArrayList<Point>();//取出所有的黑棋落子List<String> result10 = getStrContainData(content,";B\\[","\\]");int i=0;for(String str : result10) {int x = s.indexOf(str.charAt(0));int y = s.indexOf(str.charAt(1));Point point = new Point("black",x,y,i*2+1);moves.add(point);i++;}//取出所有的白棋落子int j=0;List<String> result11 = getStrContainData(content,";W\\[","\\]");for(String str : result11) {int x = s.indexOf(str.charAt(0));int y = s.indexOf(str.charAt(1));Point point = new Point("white",x,y,j*2+2);moves.add(point);j++;}moves.sort(new Comparator<Point>() {@Overridepublic int compare(Point o1, Point o2) {if(o1.getStep()>o2.getStep()) {return 1;}else {return -1;}}});

下面是解析的全部代码

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;import com.yizaiqianqiu.entity.ChessManual;
import com.yizaiqianqiu.entity.Point;import net.sf.json.JSONObject;public class ParseSGF {public ChessManual parseSGF(String path) throws IOException {ChessManual chessManual = new ChessManual();String content = getContent(path);String s = "abcdefghijklmnopqrstuvwxyz";//取比赛标题List<String> result1 = getStrContainData(content, "TE\\[", "\\]");for(String key : result1) {chessManual.setTitle(key);}//取比赛时间List<String> result2 = getStrContainData(content, "RD\\[", "\\]");for(String key : result2) {chessManual.setTime(key);}//取比赛地点List<String> result3 = getStrContainData(content, "PC\\[", "\\]");for(String key : result3) {chessManual.setDict(key);}//取出贴目List<String> result4 = getStrContainData(content, "KO\\[", "\\]");for(String key : result4) {chessManual.setTiemu(Float.parseFloat(key));}//取出结果List<String> result5 = getStrContainData(content, "RE\\[", "\\]");for(String key : result5) {chessManual.setResult(key);}//取出黑棋姓名List<String> result6 = getStrContainData(content,"PB\\[","\\]");for(String key : result6) {chessManual.setBlackName(key);}//取出黑棋水平List<String> result7 = getStrContainData(content,"BR\\[","\\]");for(String key : result7) {chessManual.setBlacklevel(key);}//取出白棋姓名List<String> result8 = getStrContainData(content,"PW\\[","\\]");for(String key : result8) {chessManual.setWhiteName(key);}//取出白棋水平List<String> result9 = getStrContainData(content,"WR\\[","\\]");for(String key : result9) {chessManual.setWhitelevel(key);}//落子List<Point> moves = new ArrayList<Point>();//取出所有的黑棋落子List<String> result10 = getStrContainData(content,";B\\[","\\]");int i=0;for(String str : result10) {int x = s.indexOf(str.charAt(0));int y = s.indexOf(str.charAt(1));Point point = new Point("black",x,y,i*2+1);moves.add(point);i++;}//取出所有的白棋落子int j=0;List<String> result11 = getStrContainData(content,";W\\[","\\]");for(String str : result11) {int x = s.indexOf(str.charAt(0));int y = s.indexOf(str.charAt(1));Point point = new Point("white",x,y,j*2+2);moves.add(point);j++;}moves.sort(new Comparator<Point>() {@Overridepublic int compare(Point o1, Point o2) {if(o1.getStep()>o2.getStep()) {return 1;}else {return -1;}}});chessManual.setPlayList(moves);String str =JSONObject.fromObject(chessManual).toString();System.out.println(str);return chessManual;}//拿到文件内容public String getContent(String path) throws IOException {String result="";FileReader reader = new FileReader(path);BufferedReader br = new BufferedReader(reader); // 建立一个对象，它把文件内容转成计算机能读懂的语言String line;//网友推荐更加简洁的写法while ((line = br.readLine()) != null) {result+=line;}return result;}public static List<String> getStrContainData(String str, String start, String end){List<String> result = new ArrayList<>();String regex = start + "(.*?)" + end;Pattern pattern = Pattern.compile(regex);Matcher matcher = pattern.matcher(str);while(matcher.find()){String key = matcher.group(1);if(!key.contains(start) && !key.contains(end)){result.add(key);}}return result;}
}

最后的结果我转成了json格式

{"blackName":"江维杰","blacklevel":"九段","dict":"中国","manualid":0,"playList":[{"color":"black","step":1,"x":15,"y":3},{"color":"white","step":2,"x":3,"y":15},{"color":"black","step":3,"x":16,"y":15},{"color":"white","step":4,"x":3,"y":3},{"color":"black","step":5,"x":13,"y":15},{"color":"white","step":6,"x":16,"y":2},{"color":"black","step":7,"x":16,"y":3},{"color":"white","step":8,"x":15,"y":2},{"color":"black","step":9,"x":13,"y":2},{"color":"white","step":10,"x":14,"y":2},{"color":"black","step":11,"x":14,"y":3},{"color":"white","step":12,"x":13,"y":1},{"color":"black","step":13,"x":5,"y":16},{"color":"white","step":14,"x":7,"y":16},{"color":"black","step":15,"x":2,"y":2},{"color":"white","step":16,"x":2,"y":3},{"color":"black","step":17,"x":3,"y":2},{"color":"white","step":18,"x":4,"y":2},{"color":"black","step":19,"x":4,"y":1},{"color":"white","step":20,"x":5,"y":1},{"color":"black","step":21,"x":5,"y":2},{"color":"white","step":22,"x":4,"y":3},{"color":"black","step":23,"x":6,"y":1},{"color":"white","step":24,"x":3,"y":1},{"color":"black","step":25,"x":5,"y":0},{"color":"white","step":26,"x":2,"y":1},{"color":"black","step":27,"x":5,"y":14},{"color":"white","step":28,"x":3,"y":12},{"color":"black","step":29,"x":9,"y":16},{"color":"white","step":30,"x":9,"y":15},{"color":"black","step":31,"x":10,"y":15},{"color":"white","step":32,"x":8,"y":15},{"color":"black","step":33,"x":10,"y":14},{"color":"white","step":34,"x":10,"y":16},{"color":"black","step":35,"x":10,"y":17},{"color":"white","step":36,"x":11,"y":16},{"color":"black","step":37,"x":8,"y":17},{"color":"white","step":38,"x":15,"y":15},{"color":"black","step":39,"x":15,"y":14},{"color":"white","step":40,"x":16,"y":14},{"color":"black","step":41,"x":15,"y":16},{"color":"white","step":42,"x":7,"y":17},{"color":"black","step":43,"x":12,"y":16},{"color":"white","step":44,"x":8,"y":13},{"color":"black","step":45,"x":1,"y":2},{"color":"white","step":46,"x":1,"y":1},{"color":"black","step":47,"x":4,"y":17},{"color":"white","step":48,"x":3,"y":16},{"color":"black","step":49,"x":6,"y":13},{"color":"white","step":50,"x":8,"y":11},{"color":"black","step":51,"x":6,"y":11},{"color":"white","step":52,"x":3,"y":10},{"color":"black","step":53,"x":2,"y":17},{"color":"white","step":54,"x":3,"y":17},{"color":"black","step":55,"x":3,"y":18},{"color":"white","step":56,"x":1,"y":16},{"color":"black","step":57,"x":4,"y":11},{"color":"white","step":58,"x":3,"y":11},{"color":"black","step":59,"x":4,"y":13},{"color":"white","step":60,"x":8,"y":9},{"color":"black","step":61,"x":5,"y":9},{"color":"white","step":62,"x":3,"y":8},{"color":"black","step":63,"x":16,"y":13},{"color":"white","step":64,"x":5,"y":7},{"color":"black","step":65,"x":9,"y":10},{"color":"white","step":66,"x":8,"y":10},{"color":"black","step":67,"x":8,"y":12},{"color":"white","step":68,"x":9,"y":12},{"color":"black","step":69,"x":7,"y":12},{"color":"white","step":70,"x":9,"y":14},{"color":"black","step":71,"x":9,"y":11},{"color":"white","step":72,"x":10,"y":13},{"color":"black","step":73,"x":11,"y":15},{"color":"white","step":74,"x":10,"y":11},{"color":"black","step":75,"x":10,"y":10},{"color":"white","step":76,"x":11,"y":11},{"color":"black","step":77,"x":11,"y":10},{"color":"white","step":78,"x":11,"y":14},{"color":"black","step":79,"x":11,"y":17},{"color":"white","step":80,"x":12,"y":10},{"color":"black","step":81,"x":10,"y":8},{"color":"white","step":82,"x":13,"y":11},{"color":"black","step":83,"x":7,"y":8},{"color":"white","step":84,"x":13,"y":8},{"color":"black","step":85,"x":12,"y":12},{"color":"white","step":86,"x":12,"y":11},{"color":"black","step":87,"x":9,"y":7},{"color":"white","step":88,"x":12,"y":2},{"color":"black","step":89,"x":13,"y":3},{"color":"white","step":90,"x":17,"y":2},{"color":"black","step":91,"x":15,"y":8},{"color":"white","step":92,"x":15,"y":10},{"color":"black","step":93,"x":4,"y":5},{"color":"white","step":94,"x":5,"y":3},{"color":"black","step":95,"x":11,"y":12},{"color":"white","step":96,"x":10,"y":12},{"color":"black","step":97,"x":2,"y":6},{"color":"white","step":98,"x":5,"y":5},{"color":"black","step":99,"x":2,"y":14},{"color":"white","step":100,"x":2,"y":13},{"color":"black","step":101,"x":2,"y":15},{"color":"white","step":102,"x":2,"y":16},{"color":"black","step":103,"x":3,"y":14},{"color":"white","step":104,"x":1,"y":14},{"color":"black","step":105,"x":1,"y":10},{"color":"white","step":106,"x":1,"y":11},{"color":"black","step":107,"x":2,"y":8},{"color":"white","step":108,"x":6,"y":9},{"color":"black","step":109,"x":3,"y":7},{"color":"white","step":110,"x":6,"y":8},{"color":"black","step":111,"x":3,"y":9},{"color":"white","step":112,"x":4,"y":8},{"color":"black","step":113,"x":4,"y":9},{"color":"white","step":114,"x":2,"y":10},{"color":"black","step":115,"x":7,"y":7},{"color":"white","step":116,"x":6,"y":10},{"color":"black","step":117,"x":5,"y":6},{"color":"white","step":118,"x":4,"y":6},{"color":"black","step":119,"x":6,"y":6},{"color":"white","step":120,"x":4,"y":7},{"color":"black","step":121,"x":6,"y":7},{"color":"white","step":122,"x":5,"y":8},{"color":"black","step":123,"x":3,"y":5},{"color":"white","step":124,"x":3,"y":6},{"color":"black","step":125,"x":2,"y":7},{"color":"white","step":126,"x":2,"y":5},{"color":"black","step":127,"x":1,"y":5},{"color":"white","step":128,"x":2,"y":4},{"color":"black","step":129,"x":5,"y":4},{"color":"white","step":130,"x":6,"y":5},{"color":"black","step":131,"x":6,"y":4},{"color":"white","step":132,"x":7,"y":5},{"color":"black","step":133,"x":4,"y":4},{"color":"white","step":134,"x":8,"y":6},{"color":"black","step":135,"x":7,"y":9},{"color":"white","step":136,"x":7,"y":10},{"color":"black","step":137,"x":8,"y":8},{"color":"white","step":138,"x":7,"y":2},{"color":"black","step":139,"x":6,"y":3},{"color":"white","step":140,"x":6,"y":2},{"color":"black","step":141,"x":7,"y":3},{"color":"white","step":142,"x":8,"y":3},{"color":"black","step":143,"x":8,"y":2},{"color":"white","step":144,"x":5,"y":1},{"color":"black","step":145,"x":8,"y":4},{"color":"white","step":146,"x":9,"y":3},{"color":"black","step":147,"x":5,"y":2},{"color":"white","step":148,"x":7,"y":1},{"color":"black","step":149,"x":7,"y":4},{"color":"white","step":150,"x":9,"y":4},{"color":"black","step":151,"x":8,"y":5},{"color":"white","step":152,"x":9,"y":5},{"color":"black","step":153,"x":7,"y":6},{"color":"white","step":154,"x":13,"y":6},{"color":"black","step":155,"x":16,"y":6},{"color":"white","step":156,"x":16,"y":9},{"color":"black","step":157,"x":12,"y":3},{"color":"white","step":158,"x":11,"y":2},{"color":"black","step":159,"x":14,"y":1},{"color":"white","step":160,"x":12,"y":1},{"color":"black","step":161,"x":17,"y":3}],"result":"黑中盘胜","tiemu":7.5,"time":"2019-05-28","title":"第10届中国围棋龙星战半决赛","whiteName":"辜梓豪","whitelevel":"九段"}

以上是楼主的简单实现，有更简单的方法，欢迎评论

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