我已经实现了客户端模型验证，它是本地的工作文件， 但是在服务器上，即使我的文本框为空，它也会显示错误，但会触及控制器各自的方法。
答案 0 :(得分：1)
服务器对于向客户端发送错误更具限制性。尝试在#include <iostream>
#include <memory>
#include <string>
template<typename T>
class LinkedList {
public:
struct Node;
using NodeType = std::shared_ptr<Node>;
struct Node {
NodeType next;
T value;
};
class forward_iterator {
NodeType cur_node;
public:
forward_iterator() {}
forward_iterator(NodeType cur_node) : cur_node(cur_node) {}
T& operator * () { return cur_node->value; }
forward_iterator& operator ++ () { cur_node = cur_node->next; return *this; }
bool operator == (const forward_iterator& it) const { return cur_node == it.cur_node; }
bool operator != (const forward_iterator& it) const { return !operator == (it); }
};
void push_back(const T& t) {
NodeType node = std::make_shared<Node>();
if(tail) {
tail->next = node;
tail = node;
} else {
head = tail = node;
}
node->value = t;
}
forward_iterator begin() { return forward_iterator(head); }
forward_iterator end() { return forward_iterator(); }
protected:
NodeType head, tail;
};
inline std::string upper_case(const std::string& s) {
std::string r;
for(auto c : s) {
if(c >= 'a' && c <= 'z') c = c - 'a' + 'A';
r.push_back(c);
}
return r;
}
template <typename Func, typename S>
inline S Map(Func func, S seq) {
S result;
for(const auto& elem : seq) {
result.push_back(func(elem));
}
return result;
}
int main() {
// add strings to a LinkedList of strings named "original"
static const char* my_data[] = { "Hello", "1234", "John Cena", "xd" };
LinkedList<std::string> original;
for(auto cstr : my_data) { original.push_back(cstr); }
// dump "original" to cout
std::cout << "-- original --\n";
for(const auto& s : original) { std::cout << s << '\n'; }
std::cout << '\n';
// Run the generic Map function with "original" as input
// A lambda will be called for each element and
// its returned value added to the result, named "mapped".
// A functor object may be used in place of the lambda
auto mapped = Map(
[](const std::string& s) { return upper_case(s); },
original);
// dump "mapped" to cout
std::cout << "-- mapped --\n";
for(const auto& s : mapped) { std::cout << s << '\n'; }
std::cout << '\n';
}
上设置IncludeErrorDetails标记，以验证这是潜在问题。
一般情况下，虽然打开此标志并不是最好的主意，但您希望以不同方式将错误序列化。
了解更多信息：click here