fix encoding on windows

build.gradle

+import java.nio.charset.StandardCharsets
+
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
@@ -25,6 +27,11 @@ buildscript {
 }
 
 allprojects {
+    tasks.withType(JavaCompile) {
+        // 在windows上面，可能会用gbk编译项目。导致乱码
+        options.encoding(StandardCharsets.UTF_8.name())
+    }
+
     repositories {
         repositories {
             maven {
@@ -47,4 +54,5 @@ task clean(type: Delete) {
 ext {
     ratelEngineVersionCode = 5
     ratelEngineVersion = "1.2.2"
-}
\ No newline at end of file
+}
+