new test case

Author: happyleaf

test/json_test.cpp

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+/*
+ * =====================================================================================
+ *
+ *       Filename:  json_test.cpp
+ *
+ *    Description:  
+ *
+ *        Version:  1.0
+ *        Created:  2017/02/15 16时44分43秒
+ *       Revision:  none
+ *       Compiler:  gcc
+ *
+ *         Author:  Chen Xi (happyleaf), happyleaf.cx
+ *   Organization:  
+ *
+ * =====================================================================================
+ */
+
+
+#include    <stdio.h>
+#include    <stdlib.h>
+#include <json/json.h>
+/* 
+ * ===  FUNCTION  ======================================================================
+ *         Name:  main
+ *  Description:  
+ * =====================================================================================
+ */
+#include <iostream>
+#include <string>
+#include <fstream>
+#include <assert.h>
+using namespace std;
+
+int main(int argc, char *argv[]) {
+    char *json = " \
+{ \n\
+    \"encoding\" : \"UTF-8\", \n\
+     \n\
+    \"plug-ins\" : [ \n\
+        \"python\", \n\
+        \"c++\",  \n\
+        \"ruby\" \n\
+        ], \n\
+         \n\
+    \"indent\" : {  \"length\" : 3, \"use_space\": true } \n\
+}\n";
+    Json::Value root(json);
+    cout<<root.asString()<<endl;
+//    cout<<(root.get("encoding","UTF-8").asString())<<endl;
+//    string a = root["encoding"].asString();
+    Json::Reader reader;
+
+    if (!reader.parse(json, json + strlen(json), root, false)) {
+        return -1;
+    }
+    cout<<(root.get("encoding","UTF-7").asString())<<endl;
+    string a = root["encoding"].asString();
+    root["big"] = "new";
+    Json::Value child = root;
+    root["child"] = child;
+    Json::StyledWriter sw;
+    cout<<sw.write(root)<<endl;
+
+    //read from file
+    ifstream ifs;
+    ifs.open("testjson.json");
+    assert(ifs.is_open());
+    Json::Value root2;
+    if (!reader.parse(ifs, root2, false))
+    {
+        return -1;
+    }
+    string name = root2["name"].asString();
+    cout<<"parse from file ,name is["<<name<<"]"<<endl;
+    Json::Value age = root2.get("age", 2);
+//    Json::Value age = root.["age"].asInt()
+    cout<<"parse from file ,age is["<<age.asInt()<<"]"<<endl;
+    cout << root2["name"].asString()<<endl;
+    root2["aaa"]="222";
+    cout << root2["aaa"].asString()<<endl;
+    cout<<sw.write(root2)<<endl;
+
+//    root2["new"] = "hello world!";
+
+    return EXIT_SUCCESS;
+}               /* ----------  end of function main  ---------- */

test/testjson.json

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+{
+"name" : "小楼一夜听春雨",
+"age" : 27
+}