1 package java9;
2
3 import java.io.IOException;
4 import java.nio.file.Files;
5 import java.nio.file.Paths;
6 import java.util.List;
7 import java.util.regex.Pattern;
8
9 public class TTT {
10
11 public static void main(String args[]) throws IOException {
12
13 List<String> readAllLines = Files.readAllLines(Paths
14 .get("/Users/hongtaowang/git/spring-boot-jpa-demo/src/main/java/com/my/app/web/IndexController.java"));
15
16 int issueLine = 29;
17
18 String preMethodSignNumber = getPreMethodSignNumber(issueLine, readAllLines);
19
20 System.out.println(preMethodSignNumber);
21
22 String preSignEndChar = getPreSignEndChar(readAllLines, issueLine);
23
24 System.out.println(preSignEndChar);
25
26 }
27
28 private static String getPreSignEndChar(List<String> readAllLines, int issueLine) {
29 int nextMethodSignLine = getNextMethodSignNumber(issueLine, readAllLines);
30
31 for (int endLineNumber = nextMethodSignLine - 1; endLineNumber > 0; endLineNumber--) {
32 String endChar = readAllLines.get(endLineNumber - 1);
33
34 if (endChar.contains("}")) {
35 return (endLineNumber) + " end line " + endChar;
36 }
37
38 }
39
40 return "";
41 }
42
43 private static int getNextMethodSignNumber(int i, List<String> readAllLines) {
44 int j = i;
45 for (; j < readAllLines.size(); j++) {
46 String p = readAllLines.get(j - 1);
47 boolean extracted = matchMethodSign(p);
48 if (extracted) {
49 break;
50 }
51
52 }
53 return j;
54 }
55
56 private static String getPreMethodSignNumber(int currentLine, List<String> readAllLines) {
57 for (int preLine = currentLine - 1; preLine > 0; preLine--) {
58 String preLineSource = readAllLines.get(preLine - 1);
59
60 if (matchMethodSign(preLineSource)) {
61 return (preLine) + " end line " + preLineSource;
62 }
63
64 }
65
66 return "";
67 }
68
69 private static boolean matchMethodSign(String d) {
70 String pattern = ".*[A-z].* .*[A-z1-9]\\(.*";
71 boolean isMatch = Pattern.matches(pattern, d);
72 if (!isMatch) {
73 return false;
74 }
75
76 if (d.contains("return")) {
77 return false;
78 }
79
80 if (d.contains("=")) {
81 return false;
82 }
83
84 return true;
85 }
86
87 }
