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URL
URLConnection 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>() {
@Override
public 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>() {
@Override
public 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
