diff --git a/core/ParamListJson.cpp b/core/ParamListJson.cpp
index ce1b462..afd55fb 100644
--- a/core/ParamListJson.cpp
+++ b/core/ParamListJson.cpp
@@ -1,10 +1,9 @@
 #include "ParamListJson.h"
-#include "ParamListModel.h"
 
 Json::Value ParamToJson(const Param &param)
 {
 	Json::Value v;
-	v["type"] = (int)param.type.toUtf8().data();
+	v["type"] = param.type.toUtf8().data();
 	v["value"] = param.value.toUtf8().data();
 	return v;
 }
@@ -16,7 +15,7 @@ Param ParamFromJson(const Json::Value &json)
 	return p;
 }
 
-Json::Value ParamListModelToJson(const t_ParamList &list)
+Json::Value ParamListToJson(const t_ParamList &list)
 {
 	Json::Value root;
 	for (const auto &param : list) {
@@ -25,7 +24,7 @@ Json::Value ParamListModelToJson(const t_ParamList &list)
 	return root;
 }
 
-t_ParamList ParamListModelFromJson(const Json::Value &json)
+t_ParamList ParamListFromJson(const Json::Value &json)
 {
 	t_ParamList result;
 	if (json.isArray())	{
diff --git a/core/ParamListJson.h b/core/ParamListJson.h
index c1140b4..0dfe2f6 100644
--- a/core/ParamListJson.h
+++ b/core/ParamListJson.h
@@ -2,9 +2,8 @@
 #define PARAMLISTJSON_H
 
 #include "json/json.h"
+#include "ParamListModel.h"
 
-class ParamListModel;
-
-Json::Value ParamListModelToJson(const t_ParamList &list);
+Json::Value ParamListToJson(const t_ParamList &list);
 
 #endif // PARAMLISTJSON_H
diff --git a/core/core.pro b/core/core.pro
index b2a9789..e785438 100644
--- a/core/core.pro
+++ b/core/core.pro
@@ -10,7 +10,10 @@ TARGET = core
 TEMPLATE = lib
 CONFIG += staticlib c++14
 
-INCLUDEPATH += C:\prog\include C:\VSproj\boost32\include\boost-1_65_1
+INCLUDEPATH += C:\prog\include \
+C:\Prog\include\pgsql \
+C:\VSproj\boost32\include\boost-1_65_1
+
 DEFINES += WIN32_LEAN_AND_MEAN NOMINMAX
 #LIBS += /LIBPATH:C:\VSproj\boost_1_63_0\stage\lib /LIBPATH:c:\prog\lib\ libpq.lib fmt.lib User32.lib ws2_32.lib
 
@@ -46,7 +49,8 @@ HEADERS += PasswordManager.h \
 	Expected.h \
     ExplainTreeModelItem.h \
     ParamListJson.h \
-    ParamListModel.h
+    ParamListModel.h \
+    json/json.h
 	
 unix {
     target.path = /usr/lib
@@ -54,3 +58,16 @@ unix {
 }
 
 
+
+win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../pgsql/release/ -lpgsql
+else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../pgsql/debug/ -lpgsql
+else:unix:!macx: LIBS += -L$$OUT_PWD/../pgsql/ -lpgsql
+
+INCLUDEPATH += $$PWD/../pgsql
+DEPENDPATH += $$PWD/../pgsql
+
+win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../pgsql/release/libpgsql.a
+else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../pgsql/debug/libpgsql.a
+else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../pgsql/release/pgsql.lib
+else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../pgsql/debug/pgsql.lib
+else:unix:!macx: PRE_TARGETDEPS += $$OUT_PWD/../pgsql/libpgsql.a
diff --git a/tests/auto/mycase/mycase.pro b/tests/auto/mycase/mycase.pro
index bb3a635..5ff7c78 100644
--- a/tests/auto/mycase/mycase.pro
+++ b/tests/auto/mycase/mycase.pro
@@ -16,12 +16,16 @@ HEADERS +=     \
     tst_PasswordManager.h
 
 SOURCES +=     main.cpp \
-    tst_ExplainJsonParser.cpp
+    tst_ExplainJsonParser.cpp \
+    tst_ParamJson.cpp
 
 win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../../../core/release/ -lcore
 else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../../../core/debug/ -lcore
 
-INCLUDEPATH += C:\prog\include C:\VSproj\boost_1_63_0
+INCLUDEPATH += C:\prog\include \
+C:\Prog\include\pgsql \
+C:\VSproj\boost32\include\boost-1_65_1
+
 INCLUDEPATH += $$PWD/../../../core
 DEPENDPATH += $$PWD/../../../core
 LIBS += c:\prog\lib\botand_imp.lib
@@ -30,3 +34,16 @@ win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../c
 else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../core/debug/libcore.a
 else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../core/release/core.lib
 else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../core/debug/core.lib
+
+win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../../../pgsql/release/ -lpgsql
+else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../../../pgsql/debug/ -lpgsql
+else:unix:!macx: LIBS += -L$$OUT_PWD/../../../pgsql/ -lpgsql
+
+INCLUDEPATH += $$PWD/../../../pgsql
+DEPENDPATH += $$PWD/../../../pgsql
+
+win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../pgsql/release/libpgsql.a
+else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../pgsql/debug/libpgsql.a
+else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../pgsql/release/pgsql.lib
+else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../../../pgsql/debug/pgsql.lib
+else:unix:!macx: PRE_TARGETDEPS += $$OUT_PWD/../../../pgsql/libpgsql.a
diff --git a/tests/auto/mycase/tst_ParamJson.cpp b/tests/auto/mycase/tst_ParamJson.cpp
new file mode 100644
index 0000000..b660670
--- /dev/null
+++ b/tests/auto/mycase/tst_ParamJson.cpp
@@ -0,0 +1,29 @@
+#include <gtest/gtest.h>
+#include <gmock/gmock-matchers.h>
+#include "ParamListModel.h"
+#include "ParamListJson.h"
+
+using namespace testing;
+
+
+TEST(ParamListToJson, test1)
+{
+	t_ParamList params;
+	params.emplace_back("valuestr", "typestr");
+
+	Json::Value root = ParamListToJson(params);   // will contains the root value after parsing.
+	ASSERT_TRUE(root.isArray());
+	ASSERT_EQ(root.size(), 1);
+
+	Json::Value e = root[0];
+	ASSERT_TRUE(e.isMember("type"));
+	ASSERT_TRUE(e.isMember("value"));
+	ASSERT_EQ(e["type"].asString(), "typestr");
+	ASSERT_EQ(e["value"].asString(), "valuestr");
+//	Json::Reader reader;
+//	bool parsingSuccessful = reader.parse(input, root);
+//	auto explain = ExplainRoot::createFromJson(root);
+
+//	ASSERT_TRUE(explain != nullptr);
+}
+