示例：
预期产量：快速的棕色狮子跳过懒兔。
我现在得到的是什么。
Diff(DELETE,"fox")
Diff(INSERT,"lion")
所以，我没有关于狐狸被删除的地方以及添加狮子的地方的背景。因此，即使有一些操作的左右15个字符也可以。 我现在的代码：
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(oldText,newText);
for(diff_match_patch.Diff d : deltas){
if((d.operation == diff_match_patch.Operation.DELETE) || (d.operation== diff_match_patch.Operation.INSERT)) {
System.out.println(d);
}
}
任何帮助都会很好。非常感谢。 :-)如果对我解释的方式有任何疑问，请告诉我。
修改的 从答案中添加了新代码：
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(notes1.getNotetext(),notes.getNotetext());
for(diff_match_patch.Diff d : deltas) {
if ((d.operation == diff_match_patch.Operation.DELETE) || (d.operation == diff_match_patch.Operation.INSERT)) {
Pattern myPattern = Pattern.compile("(\\. |^)(.*" + d.text + ".*)(\\. )");
Matcher m = myPattern.matcher(notes1.getNotetext());
while (m.find()) {
System.out.println("Found " + d.operation + " of: " + d.text + " in sentence: " + m.group());
}
}
}
The output I am getting is wrong, something like this I am getting,
Found DELETE of: I in sentence: I yoyo am also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: oyo am in sentence: I yoyo am also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: a in sentence: akshay also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found INSERT of: a in sentence: kshay also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found INSERT of: r in sentence: akshay also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: ks in sentence: akshay also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: ay in sentence: akshay also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found INSERT of: ul in sentence: akshay also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: In this, in sentence: rahul also working on a webapp in which the user can make changes to a text area. In this, he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: ang in sentence: rahul also working on a webapp in which the user can make changes to a text area. he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: s in sentence: rahul also working on a webapp in which the user can make changes to a text area. he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found INSERT of: ck in sentence: rahul also working on a webapp in which the user can make changes to a text area. he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
Found DELETE of: rahul in sentence: rahul also working on a webapp in which the user can make check to a text area. he can either write one paragraph, one sentence. So what I am currently trying to do is to split the whole paragraph by a dot separator. Once that is done, I would like to check which sentences have changed. I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays. But it is not working, I am getting zero String modified from it. Kindly let me know what I am doing wrong.
我想知道什么时候删除整个单词/句子，所以我可以在数据库中正确保存它。你能帮忙的话，我会很高兴。非常感谢。 ： - ）
修改的 下面提到的答案非常适合获得2个单独的字符串，可以在数据库中保留。
答案 0 :(得分：3)
经过广泛的重新考虑后，我认为这不是正则表达式的情况。同样的变化我出现在几行中，所以你必须逐行检查你的输入：
//-------------------------Example Strings---------------------------------------------
private static String oldText = "I yoyo am also working on a \n webapp in which the user can make changes to a text area. " +
"In this, he can either write one paragraph, one sentence." +
" So what I am currently trying to do is to split the whole paragraph by a dot separator. " +
"Once that is done, I would like to check which sentences have changed." +
" I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays." +
" But it is not working, I am getting zero String modified from it."+
" Kindly let me know what I am doing wrong.";
private static String newText = "akshay is also working on a \n webapp in which the user can make changes to a text area. " +
"He can either write one paragraph, one sentence." +
" So what I am currently trying to do is to split the whole paragraph by a dot separator. " +
"Once that is done, I would like to check which sentences have changed." +
" I am currently doing it using for loop, which is not accurate as I have to length of array to Math.minimum of both String arrays." +
" But it is not working, I am getting zero String modified from it.";
//-------------------------Example Strings end --------------------------------------
private static diff_match_patch diffMatchPatch;
public static void main(String[] args) {
diffMatchPatch = new diff_match_patch();
//Split text into List of strings
List<String> oldTextList = Arrays.asList(oldText.split("(\\.|\\n)"));
List<String> newTextList = Arrays.asList(newText.split("(\\.|\\n)"));
//If we have different length
int counter = Math.max(oldTextList.size(), newTextList.size());
StringBuilder sb = new StringBuilder();
for(int current = 0; current < counter; current++){
String oldString = null;
String newString = null;
if(oldTextList.size() <= current){
oldString = "";
newString = newTextList.get(current);
} else if (newTextList.size() <= current){
oldString = oldTextList.get(current);
newString = "";
} else {
if (isLineDifferent(oldTextList.get(current), newTextList.get(current))){
oldString = oldTextList.get(current);
newString = newTextList.get(current);
}
}
if(oldString != null && newString != null) {
//---- Insert into database here -----
sb.append("Changes for Line: " + current + "\n");
sb.append("Old: " + oldString + "; New: " + newString +";\n");
}
}
System.out.println(sb.toString());
}
private static boolean isLineDifferent(String oldString, String newString) {
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(oldString,newString);
for(diff_match_patch.Diff d : deltas){
if (d.operation == diff_match_patch.Operation.EQUAL) continue;
return true;
}
return false;
}
}
这应该会给你带来以下结果：
Changes for Line: 0
Old: I yoyo am also working on a ; New: akshay is also working on a ;
Changes for Line: 2
Old: In this, he can either write one paragraph, one sentence; New: He can either write one paragraph, one sentence;
Changes for Line: 8
Old: Kindly let me know what I am doing wrong; New: ;
请注意，我只添加了＆＃34 ;;＆＃34;作为Stringbuilder的分离符号，以便您可以辨别字符串的结束位置。当然，这仍然不是一件值得考虑的事情：