使用Java解析xml文件为json格式

解析结果：{{"type":"FUNCTION","name":"F_EQ","returnValue":"BOOL"}, [[{"anno":"aaaaaaaaaaaaaa","keyword":"VAR","name":"D","pointer":true,"retain":"CONSTANT","type":"REF_TO","value":"111"}],[{"anno":"BBBBBBBBBBB","keyword":"VAR_INPUT","name":"A","pointer":false,"retain":"RETAIN","type":"FLOAT","value":""},{"anno":"CCCCCCCC","keyword":"VAR_INPUT","name":"G","pointer":false,"retain":"RETAIN","type":"FLOAT","value":""},{"anno":"FFFFFFFFFFF","keyword":"VAR_INPUT","name":"H","pointer":false,"retain":"RETAIN","type":"FLOAT","value":""}],[{"anno":"","keyword":"VAR_OUTPUT","name":"B","pointer":false,"retain":"NON_RETAIN","type":"FLOAT","value":""}],[{"anno":"","keyword":"VAR_IN_OUT","name":"C","pointer":false,"retain":"PERSISTENT","type":"FLOAT","value":""}],[{"anno":"","keyword":"VAR_EXTERNAL","name":"E","pointer":false,"retain":"","type":"INT","value":""}],[{"anno":"","keyword":"VAR_TEMP","name":"F","pointer":false,"retain":"","type":"INT","value":""}]],
{"代码":"IF g_byMO_MI_Num < 1 THEN;ELSEFOR i := 0 TO g_byMO_MI_Num -1 DOIF u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi <>0 THENIF ( u_apMOMITbl[i]^.Axis.output_mi.byCurrMotionID = MOTIONID_STOP_HYB ) THENu_apMOMITbl[i]^.MIInterface.pFB_MI_Stop_HYB^(xExecute\t:=
TRUE,//xOpenLoop\t:= TRUE,Axis_mi_ref\t:= u_apMOMITbl[i]^.Axis);END_IFIF u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity < 0 THENDev_Output_Write(OUTPUT_DRIVER1_NEGATIVE,1);Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,-u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity);ELSEDev_Output_Write(OUTPUT_DRIVER1_NEGATIVE,0);Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity);END_IFDev_PowerGroup_WritePress(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutPressure);//Dev_PowerGroup_WritePress(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rProfilePressure);//Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rProfileSpeed);//Dev_PowerGroup_WritePress(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutPressure);//Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity);Dev_PowerGroup_WriteServoValve(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutServoValveSpeed);Dev_PowerGroup_WriteTorque(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutTorque);Dev_PowerGroup_WritePosition(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutPosition);END_IFEND_FOREND_IFEND_FUNCTION"}}

1，这是我要解析的xml文件

FUNCTION       F_EQ   : BOOL

  VAR CONSTANT

  //aaaaaaaaaaaaaa

    D : REF_TO DWORD := 111 ; //dhdh dsad a

  END_VAR

  VAR_INPUT RETAIN

  //BBBBBBBBBBB

    A : FLOAT ;

    //CCCCCCCC

    G : FLOAT ;

    //FFFFFFFFFFF

    H : FLOAT ;

  END_VAR

  

  VAR_OUTPUT NON_RETAIN

    B : FLOAT;

  END_VAR

  VAR_IN_OUT PERSISTENT

    C : FLOAT;

  END_VAR

  VAR_EXTERNA
4000
L 

    E : INT ;

  END_VAR

  VAR_TEMP

    F : INT ;

  END_VAR
IF g_byMO_MI_Num < 1 THEN; 
ELSE 
FOR i := 0 TO g_byMO_MI_Num -1 DO

IF u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi <>0 THEN
IF ( u_apMOMITbl[i]^.Axis.output_mi.byCurrMotionID = MOTIONID_STOP_HYB ) THEN
u_apMOMITbl[i]^.MIInterface.pFB_MI_Stop_HYB^(
xExecute
:= TRUE,
//xOpenLoop
:= TRUE,
Axis_mi_ref
:= u_apMOMITbl[i]^.Axis
);
END_IF
IF u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity < 0 THEN
Dev_Output_Write(OUTPUT_DRIVER1_NEGATIVE,1);
Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,-u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity);
ELSE
Dev_Output_Write(OUTPUT_DRIVER1_NEGATIVE,0);
Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity);
END_IF

Dev_PowerGroup_WritePress(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutPressure);

//Dev_PowerGroup_WritePress(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rProfilePressure);

//Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rProfileSpeed);

//Dev_PowerGroup_WritePress(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutPressure);

//Dev_PowerGroup_WriteSpeed(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutVelocity);
Dev_PowerGroup_WriteServoValve(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutServoValveSpeed);
Dev_PowerGroup_WriteTorque(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutTorque);

Dev_PowerGroup_WritePosition(u_apMOMITbl[i]^.Axis.input_mi.pConfig_mi^.byPowerGroupIndex,u_apMOMITbl[i]^.Axis.output_mi.rOutPosition);

END_IF
END_FOR
END_IF
END_FUNCTION

2、需要定义两个类存储这个文件中的对象

这个文件有两个对象，整个文件为一个对象，其中的变量的属性为一个对象

package plc;

import net.sf.json.JSONArray;

import net.sf.json.JSONObject;

public class Json {
private JSONObject jsonObject;
private JSONArray jsonArry;
private  JSONObject   code;
public Json() {
super();
}
public Json(JSONObject jsonObject, JSONArray jsonArry, JSONObject code) {
super();
this.jsonObject = jsonObject;
this.jsonArry = jsonArry;
this.code = code;
}
public JSONObject getJsonObject() {
return jsonObject;
}
public void setJsonObject(JSONObject jsonObject) {
this.jsonObject = jsonObject;
}
public JSONArray getJsonArry() {
return jsonArry;
}
public void setJsonArry(JSONArray jsonArry) {
this.jsonArry = jsonArry;
}
public JSONObject getCode() {
return code;
}
public void setCode(JSONObject code) {
this.code = code;
}
@Override
public String toString() {
return "{" + jsonObject + ", " + jsonArry + ", " + code + "}";
}  

}

package plc;

public class Parameter {
private String  keyword;
private String  name;
private String retain;
private String  type;
private boolean pointer;
private String  value;
private String anno;
public Parameter() {
super();
}
public Parameter(String keyword, String name, String retain, String type, boolean pointer, String value,
String anno) {
super();
this.keyword = keyword;
this.name = name;
this.retain = retain;
this.type = type;
this.pointer = pointer;
this.value = value;
this.anno = anno;
}
public String getKeyword() {
return keyword;
}
public void setKeyword(String keyword) {
this.keyword = keyword;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getRetain() {
return retain;
}
public void setRetain(String retain) {
this.retain = retain;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public boolean isPointer() {
return pointer;
}
public void setPointer(boolean pointer) {
this.pointer = pointer;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public String getAnno() {
return anno;
}
public void setAnno(String anno) {
this.anno = anno;
}
@Override
public String toString() {
return "[keyword:" + keyword +", retain:" + retain  + ", name:" + name + ", type:" + type
+ ", pointer:" + pointer + ", value:" + value + ", anno:" + anno + "]";
}

}

3、解析文件的主代码

package plc;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.util.regex.Pattern;

import net.sf.json.JSONArray;

import net.sf.json.JSONObject;

public class TManalysis3 {

private static Json json;

public static void main(String[] args) throws IOException {
json = new Json();
JSONArray jsonArray = new JSONArray();
json.setJsonArry(jsonArray);

File file = new File("E:\\JAV\\WorkSpace\\WorkSpace-rcp\\plc111\\plc.st");
InputStreamReader read = new InputStreamReader(new FileInputStream(file));
BufferedReader bufferedReader = new BufferedReader(read);
String regex = "\\s";
String regexFunction = "[A-Z]+\\s[A-Za-z0-9_]+\\s:\\s[A-Za-z0-9_]+";
String regexVar = "(VAR.*|VAR)\\s[A-Z_]+";
String regexVar1 = "^VAR.*";
String regexArgument1 = "[A-Z]+\\s:\\s[A-Z]+\\s;";
String regexArgument2 = "[A-Z]+\\s:\\s[A-Z]+;";
String regexPointer = "[A-Z]+\\s:\\s[A-Z_]+\\s[A-Z]+\\s:=\\s[0-9]+\\s;";
String regexAnnotation = "\\//[A-Za-z0-9_\u0391-\uFFE5]+";
String misTake = "[\u4e00-\u9fa5]";
Pattern pattern = Pattern.compile(regex);
String lineStri = null;
String annotation = null;

String s = new String();
JSONArray js = new JSONArray();
Parameter p = new Parameter();

while ((lineStri = bufferedReader.readLine()) != null) {
String lineStr = lineStri.replaceAll(" {2,}", " ");
lineStr = lineStr.trim();
String[] lineWords = pattern.split(lineStr);
if(lineStr.matches(regexAnnotation)) {

}

for (int i = 0; i < lineWords.length; i++) {
if (lineStr.matches(regexFunction)) {

JSONObject jsobject = new JSONObject();
json.setJsonObject(jsobject);
jsobject.put("type", lineWords[0]);
jsobject.put("name", lineWords[1]);
jsobject.put("returnValue", lineWords[3]);
break;

} else if (lineStr.matches(regexAnnotation)) {

annotation = lineStr.substring(2);
break;

} else if (lineStr.matches(regexVar)) {

p.setKeyword(lineWords[i]);
p.setRetain(lineWords[i + 1]);
break;
} else if (lineStr.matches(regexVar1)) {

p.setKeyword(lineWords[i]);
p.setRetain(null);
break;
}

else if (lineWords[i].matches("END_VAR")) {

jsonArray.add(js);
p = new Parameter();
js = new JSONArray();
break;
} else if (lineStr.matches(regexPointer)) {

p.setName(lineWords[0]);
p.setPointer(true);
p.setType(lineWords[2]);
p.setValue(lineWords[5]);
p.setAnno(annotation);
annotation = null;

js.add(p);
break;

} else if (lineStr.matches(regexArgument1)) {

p.setName(lineWords[0]);
p.setType(lineWords[2]);
p.setAnno(annotation);
annotation = null;

js.add(p);
break;

} else if (lineStr.matches(regexArgument2)) {

p.setName(lineWords[0]);
p.setType(lineWords[2].substring(0, lineWords[2].length() - 1));
p.setAnno(annotation);
annotation = null;

js.add(p);
break;

} else if (lineStr.matches(misTake)) {
System.out.println("无法解析");
System.exit(0);

} else {
// System.out.println(lineStr);
s = s + lineStr;

break;
}

}

}

JSONObject jsonCODE = new JSONObject();
json.setCode(jsonCODE);
jsonCODE.put("代码", s);

System.out.println(json);
}

}