Question

我正在尝试替换routeName和routeDurationInMinutes但是rpelace方法不起作用。当我在运行功能之外使用它时它正在工作，但它内部不起作用。有任何想法吗？我添加了我想要运行的所有代码。对不起，这是如此来回。我试图缩短它以便其他人阅读。

The Value g =  {"routes":[{"routeName":"I-190 N; Electric Ave","routeDurationInMinutes":70,"routeLengthKM":83.865,"routeLengthMiles":52.111278915,"toll":false},{"routeName":"I-190 N; Greenville Rd","routeDurationInMinutes":82,"routeLengthKM":92.569,"routeLengthMiles":57.519692099000004,"toll":false}],"startPoint":"street address","endPoint":"destination","startLatitude":"42.20115054203528","startLongitude":"-71.85038140607858","endLatitude":"42.201220801535","endLongitude":"-71.849075146695"}

 final Runnable rundatapoll = new Runnable() {

        @Override
        public void run() {
            String g;
            try {
                g = new apicall().execute().get().getBody().toString();
                System.out.println(g);
                String route1;

                String route2;
                String time1;
                String time2;
                String time3;
                ArrayList parse= new ArrayList();
                ArrayList route= new ArrayList();
                ArrayList time= new ArrayList();
                Pattern p= Pattern.compile("routeName?.+?routeLengthKM");
                Matcher m = p.matcher(g);
                Pattern p2= Pattern.compile("routeName?.+?routeDurationInMinutes");
                Pattern p3= Pattern.compile("routeDurationInMinutes?.+?routeLengthKM");
                Matcher m3= p3.matcher(g);

                while (m.find()) {
                    parse.add(m.group());
                }

                while (m3.find()){
                    time.add(m3.group());
                }

                int l=0;
                while (l<parse.size()){
                    Matcher m2 =p2.matcher((CharSequence) parse.get(l));

                    while(m2.find()){
                        route.add(m2.group());
                    }

                    l++;
                }

//////////////////////////////////////////////////////////////////////////////////////


                route1= (String) route.get(0);
                route2= (String) route.get(1);
                route1= route1.replace(",routeDurationInMinutes","");
                route1= route1.replace("routeName:","");
                route2= route2.replace(",routeDurationInMinutes","");
                route2= route2.replace("routeName:","");
                time1= (String) time.get(0);
                time2= (String) time.get(1);
                time1= time1.replace("routeDurationInMinutes:","");
                time1= time1.replace(",routeLengthKM","");
                time2= time2.replace("routeDurationInMinutes:","");
                time2= time2.replace(",routeLengthKM","");


                t1.setValue(time1);
                t2.setValue(time2);
                r1.setValue(route1);
                r2.setValue(route2);

            } catch (InterruptedException e) {
                e.printStackTrace();
            } catch (ExecutionException e) {
                e.printStackTrace();
            }

        }
    };

>>>routeName":"I-190 N; Electric Ave","routeDurationInMinutes

Answer 1

看起来线程可能没有按照评论中的建议执行。

这对我有用：

package example;

public class Example {

     final String g="routeName:I-190 N; Electric Ave,routeDurationInMinutes";
     final Runnable rundatapoll = new Runnable() {
            @Override
            public void run() {
                  String route1=g;
                  System.out.println("BEFORE THREAD");
                  System.out.println(route1);
                  route1= route1.replace(",routeDurationInMinutes","");
                  route1= route1.replace("routeName:","");
                  System.out.println("AFTER RUNNING THREAD:");
                  System.out.println(route1);
                  System.out.println("DONE");
            }
    };

    public static void main(String[] args) {
        Example example = new Example();
        Thread thread = new Thread(example.rundatapoll);
        thread.start();
    }

}

输出：

BEFORE THREAD
routeName:I-190 N; Electric Ave,routeDurationInMinutes
AFTER RUNNING THREAD:
I-190 N; Electric Ave
DONE

Answer 2

或者您可以使用JSON解析器。像这样：

package example;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;

public class JsonExample {

    public static void main(String[] args) {
        try {
            String json = "{\"routes\":[{\"routeName\":\"I-190 N; Electric Ave\",\"routeDurationInMinutes\":70,\"routeLengthKM\":83.865,\"routeLengthMiles\":52.111278915,\"toll\":false},{\"routeName\":\"I-190 N; Greenville Rd\",\"routeDurationInMinutes\":82,\"routeLengthKM\":92.569,\"routeLengthMiles\":57.519692099000004,\"toll\":false}],\"startPoint\":\"street address\",\"endPoint\":\"destination\",\"startLatitude\":\"42.20115054203528\",\"startLongitude\":\"-71.85038140607858\",\"endLatitude\":\"42.201220801535\",\"endLongitude\":\"-71.849075146695\"}";
            JSONParser parser = new JSONParser();
            JSONObject obj = (JSONObject) parser.parse(json);
            JSONArray routes = (JSONArray) obj.get("routes");
            System.out.println("ROUTES: ");
            for(Object route : routes) {
                JSONObject routeObj = (JSONObject) route;
                String routeName = routeObj.get("routeName") + "";
                System.out.println("Route name: " + routeName);
            }
        } catch (Exception exp) {
            throw new RuntimeException(exp);
        }
    }

}

输出：

ROUTES: 
Route name: I-190 N; Electric Ave
Route name: I-190 N; Greenville Rd

Java的替换方法不起作用

2 个答案: