类模板成员函数类外实现的编译错误，不知道哪里错了

Question

在学习类模板成员函数类外实现遇到了三个错误，水平有限，请大家帮我解决一下

#include<iostream>
using namespace std;
#include<string>
template<class T1,class T2>
class Person
{
public:
    Person(T1 name,T2 age);
    T1 m_Name;
    T2 m_Age;
};
//构造函数类外实现
template<class T1,class T2>
Person<T1.T2>::Person(T1 name,T2 age)
{
    this->m_Name=name;
    this->m_Age=age;
}
template<class T1,class T2>
void Person<T1,T2>::showPerson()
{
    cout<<"name:"<<this->m_Name<<"age:"<<this->m_Age<<endl;
}
void test01()
{
    Person<string,int> P("Tom",20);
    P.showPerson();
}
int main()
{
    test01();
    system("pause");
    return 0;
}

三个错误原因是
错误 1 error C2143: 语法错误 : 缺少“,”(在“.”的前面)
错误 2 error C2649: “typename”: 不是“class”
错误 3 fatal error C1004: 发现意外的文件尾

Answer 1

#include <iostream>
using namespace std;
#include <string>
template <class T1, class T2>
class Person
{
public:
    Person(T1 name, T2 age);
    T1 m_Name;
    T2 m_Age;
    void showPerson();
};
// 构造函数类外实现
template <class T1, class T2>
Person<T1, T2>::Person(T1 name, T2 age) 
{
    this->m_Name = name;
    this->m_Age = age;
}
template <class T1, class T2>
void Person<T1, T2>::showPerson()
{
    cout << "name:" << this->m_Name << "age:" << this->m_Age << endl;
}
void test01()
{
    Person<string, int> P("Tom", 20);
    P.showPerson();
}
int main()
{
    test01();
    system("pause");
    return 0;
}