node 怎么把buffer 转为json对象

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解决时间 2021-01-25 10:07

提问者网友：孤凫
2021-01-25 04:32

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五星知识达人网友：执傲
2021-01-25 04:47

前端传给服务器的只是json 格式的字符串，使用json_decode， mixed json_decode ( string $json [, bool $assoc ] ) var_dump(json_decode($json)); var_dump(json_decode($json, true)); 如果不带参数，则返回为对象带上true时，返回数组 fore...

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1楼网友：孤独入客枕
2021-01-25 05:08

例子: package org.protob; import org.protob.w.helloworld; import com.google.protobuf.invalidprotocolbufferexception; import com.googlecode.protobuf.format.jsonformat; import com.googlecode.protobuf.format.jsonformat.parseexception; public class main { public static void main(string[] args) throws exception { main2(null); main3(null); main4(null); } //序列化 /返序列化 public static void main2(string[] args) throws invalidprotocolbufferexception { //序列化 helloworld.builder builder=helloworld.newbuilder(); builder.setid(10); builder.setstr("fx"); builder.setopt(20); helloworld info=builder.build(); byte[] result=info.tobytearray() ; //返序列化 helloworld msg = helloworld.parsefrom(result); system.out.println(msg); } //protobuf转json public static void main3(string[] args) throws invalidprotocolbufferexception { //序列化 helloworld.builder builder=helloworld.newbuilder(); builder.setid(10); builder.setstr("fx"); builder.setopt(20); helloworld info=builder.build(); byte[] result=info.tobytearray() ; //返序列化 helloworld hello = helloworld.parsefrom(result); system.out.println(hello); string jsonformat =jsonformat.printtostring(hello); system.out.println(jsonformat); } //josn转protobuf public static void main4(string[] args) throws parseexception { helloworld.builder builder =helloworld.newbuilder(); string jsonformat = "{id:11,str:'xxx',opt:50}"; jsonformat.merge(jsonformat, builder); system.out.println(builder.build()); } } proto文件 w.proto package org.protob; message helloworld { required int32 id = 1; // id required string str = 2; // str optional int32 opt = 3; //optional field } 生成后的java类 // generated by the protocol buffer compiler. do not edit! // source: w.proto package org.protob; public final class w { private w() {} public static void registerallextensions( com.google.protobuf.extensionregistry registry) { } public interface helloworldorbuilder extends com.google.protobuf.messageorbuilder { // required int32 id = 1; /** * required int32 id = 1; * *

     * id 
     *

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