rapidjson组装map和数组array的代码示例
直接上码：
#include #include // 请自己下载开源的rapidjson #include "rapidjson/prettywriter.h" #include "rapidjson/rapidjson.h" #include "rapidjson/document.h" #include "rapidjson/stringbuffer.h" #include "rapidjson/writer.h" #include "rapidjson/memorystream.h" #include #include using namespace std; using rapidjson::Document; using rapidjson::StringBuffer; using rapidjson::Writer; using namespace rapidjson; // 注意int和uint64_t map g_mChildInt; map g_mChildString; string formJson(const map &mInt, const map &mString, const string &strChild="", const map &mChildInt=g_mChildInt, const map &mChildString=g_mChildString, const string &strChild2="", const map &mChildInt2=g_mChildInt, const map &mChildString2=g_mChildString) { Document document; Document::AllocatorType& allocator = document.GetAllocator(); Value root(kObjectType); Value key(kStringType); Value value(kStringType); // 当前级别 for(map::const_iterator it = mInt.begin(); it != mInt.end(); ++it) { key.SetString(it->first.c_str(), allocator); root.AddMember(key, it->second, allocator); } for(map::const_iterator it = mString.begin(); it != mString.end(); ++it) { key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); root.AddMember(key, value, allocator); } // 孩子级别 if(!strChild.empty()) { Value child(kObjectType); for(map::const_iterator it = mChildInt.begin(); it != mChildInt.end(); ++it) { key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator); } for(map::const_iterator it = mChildString.begin(); it != mChildString.end(); ++it) { key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator); } key.SetString(strChild.c_str(), allocator); root.AddMember(key, child, allocator); } // 孩子级别 if(!strChild2.empty()) { Value child(kObjectType); for(map::const_iterator it = mChildInt2.begin(); it != mChildInt2.end(); ++it) { key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator); } for(map::const_iterator it = mChildString2.begin(); it != mChildString2.end(); ++it) { key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator); } key.SetString(strChild2.c_str(), allocator); root.AddMember(key, child, allocator); } StringBuffer buffer; Writer writer(buffer); root.Accept(writer); return buffer.GetString(); } string formJsonWithArray(const map &mInt, const map &mString, const string &strChild1, const map &mChildInt, const map &mChildString, string &strChild2, vector >&mVecChildInt, vector >&mVecChildString) { Document document; Document::AllocatorType& allocator = document.GetAllocator(); Value root(kObjectType); Value key(kStringType); Value value(kStringType); // 当前级别 for(map::const_iterator it = mInt.begin(); it != mInt.end(); ++it) { key.SetString(it->first.c_str(), allocator); root.AddMember(key, it->second, allocator); } for(map::const_iterator it = mString.begin(); it != mString.end(); ++it) { key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); root.AddMember(key, value, allocator); } // 孩子级别 if(!strChild1.empty()) { Value child(kObjectType); for(map::const_iterator it = mChildInt.begin(); it != mChildInt.end(); ++it) { key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator); } for(map::const_iterator it = mChildString.begin(); it != mChildString.end(); ++it) { key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator); } key.SetString(strChild1.c_str(), allocator); root.AddMember(key, child, allocator); } // 孩子级别 unsigned int uiSize1 = mVecChildInt.size(); unsigned int uiSize2 = mVecChildString.size(); if(!strChild2.empty() && uiSize1 == uiSize2) { Value array(rapidjson::kArrayType); for(unsigned int i = 0; i < uiSize1; ++i) { Value child(kObjectType); for(map::iterator it = mVecChildInt[i].begin(); it != mVecChildInt[i].end(); ++it) { key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator); } for(map::iterator it = mVecChildString[i].begin(); it != mVecChildString[i].end(); ++it) { key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator); } array.PushBack(child, allocator); } key.SetString(strChild2.c_str(), allocator); root.AddMember(key, array, allocator); } StringBuffer buffer; Writer writer(buffer); root.Accept(writer); return buffer.GetString(); } void test1() { map mInt; map mString; mInt["code"] = 0; mString["msg"] = "ok"; string strChild1 = "xxx"; map mChildInt1; map mChildString1; mChildInt1["key"] = 729; mChildString1["kk"] = "vv"; string strChild2 = "yyy"; map mChildInt2; map mChildString2; mChildInt2["key"] = 730; mChildString2["kkk"] = "vvv"; string s = formJson(mInt, mString, strChild1, mChildInt1, mChildString1,strChild2, mChildInt2, mChildString2); cout << s << endl; } void test2() { map mInt; map mString; mInt["code"] = 0; mString["msg"] = "ok"; string strChild1 = "xxx"; map mChildInt; map mChildString; mChildString["kk"] = "vv"; mChildInt["key"] = 729; string strChild2 = "data"; vector >mVecChildInt; vector >mVecChildString; { map mChildInt; map mChildString; mChildInt["id"] = 1; mChildString["path"] = "pa"; mChildString["sha"] = "sh"; mVecChildInt.push_back(mChildInt); mVecChildString.push_back(mChildString); } { map mChildInt; map mChildString; mChildInt["id"] = 2; mChildString["path"] = "pa"; mChildString["sha"] = "sh"; mVecChildInt.push_back(mChildInt); mVecChildString.push_back(mChildString); } string s = formJsonWithArray(mInt, mString, strChild1, mChildInt, mChildString, strChild2, mVecChildInt, mVecChildString); cout << s << endl; } int main(int argc, char *argv[]) { test1(); test2(); return 0; }
结果：
{"code":0,"msg":"ok","xxx":{"key":729,"kk":"vv"},"yyy":{"key":730,"kkk":"vvv"}} {"code":0,"msg":"ok","xxx":{"key":729,"kk":"vv"},"data":[{"id":1,"path":"pa","sha":"sh"},{"id":2,"path":"pa","sha":"sh"}]}
总结
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