降低targetSdkVersion為 27

使用http請求

app/build.gradle

@@ -7,7 +7,7 @@ android {
     defaultConfig {
         applicationId "com.yuxihan.sdu"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 

app/src/main/java/com/yuxihan/sdu/data/model/DataBean.java

@@ -35,4 +35,13 @@ public class DataBean {
     public void setResult(String result) {
         this.result = result;
     }
+
+    @Override
+    public String toString() {
+        return "DataBean{" +
+                "errCode='" + errCode + '\'' +
+                ", errMsg='" + errMsg + '\'' +
+                ", result='" + result + '\'' +
+                '}';
+    }
 }