我有一个要求,我必须从PDF文件中获取数据,该文件在单词“IN:”之后和单词“OUT:”之前,并且在文件中有很多这样的事件。
问题陈述是它也可以是多行,并且它的格式没有定义。
我甚至通过设置一些条件来尝试它,比如以特定字符开头或结尾,但是这样我就必须编写太多的条件,并且这样的格式确实存在于获取后的“OUT:”字之后。
请告诉我如何解决问题。
以下是示例数据格式:
格式1:
IN: {
"abc": "valueabc",
"def": "valuedef",
"ghi":
[
{"jkl": valuejkl, "mno": valuemno, "pqr":
"valuepqr"},
{"jkl": valuejkl, "mno": valuemno, "stu": "valuestu", "pqr":
"valuepqr"},
{"jkl": valuejkl, "mno": valuemno, "stu": "valuestu", "pqr":
"valuepqr"}
],
"id": "1"
}
OUT: {"abc": "valueabc", "id": "1", "def": {}}
格式2:
IN: {"abc": "valueabc", "def": "valuedef", "id": "1"}
OUT: {"abc": "valueabc", "id": "1", "ghi": "valueghi"}
格式3:
IN: {"abc": "valueabc", "def": "valuedef", "jkl":
["valuejkl"], "id": "1"}
OUT: {"abc": "valueabc", "id": "1", "ghi": {}}
下面是我尝试的解决方案代码的核心逻辑,在if语句中还有需要获取的单独数据,之后它是在“IN:”之后和“OUT:”之前获取数据的逻辑。
for(String line:lines)
{
String pattern = "^[0-9]+[\\.][0-9]+[\\.][0-9]+[\\.].*";
boolean matches = Pattern.matches(pattern, line);
if(matches)
{
String subString1 = line.split("\\.")[3].trim();
String subString2 = line.split("\\.")[4].trim();
String finalString = subString1+"."+subString2+",";
System.out.println();
System.out.print(finalString);
}
else if(line.startsWith("IN:"))
{
String finalString = line.substring(3).trim();
System.out.print(finalString);
}
else if(!(line.startsWith("IN:")||line.startsWith("OUT:"))&&((line.trim().length()>1)&&(line.endsWith("}"))))
{
String finalString = line.trim();
System.out.print(finalString);
}
else if(!(line.startsWith("IN:")||line.startsWith("OUT:"))&&((line.trim().length()>1)&&(line.startsWith("\""))))
{
String finalString = line.trim();
System.out.print(finalString);
}
else
{
continue;
}
}
这个怎么样?如果你想要一个IN:
和OUT:
之间的值,你能试试这段代码吗?
StringBuilder sb = new StringBuilder();
boolean targetFound = false;
for (String line : lines) {
if (line.startsWith("IN:")) {
line = line.replace("IN:", "");
targetFound = false;
} else if (line.startsWith("OUT:")) {
targetFound = true;
}
if (targetFound && !line.equals("OUT:")) {
// Print
System.out.println(sb.toString());
sb.setLength(0);
} else {
sb.append(line.trim());
}
}
输入文本:
IN: {
"abc": "valueabc",
"def": "valuedef",
"ghi":
[
"valuepqr"},
{"jkl": valuejkl, "mno": valuemno, "stu": "valuestu", "pqr":
"valuepqr"}
],
"id": "1"
}
OUT: {"abc": "valueabc", "~"}
结果:
{"abc": "valueabc","def": "valuedef","ghi":["valuepqr"},{"jkl": valuejkl, "mno": valuemno, "stu": "valuestu", "pqr":"valuepqr"}],"id": "1"}