与Ajax一起提交时，表单未在控制器中生效

如何解决与Ajax一起提交时，表单未在控制器中生效

我看过其他有关如何编写代码的文章，但仍然无法正常工作

我正在尝试使用Ajax提交表单，但是单击按钮时，控制器中的操作永远不会被击中。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <term.h>
#include <readline/readline.h>

int execute_line(char *line);
void initialize_readline();
static char **fileman_completion(char *text,int start,int end);
static char *command_generator(char *text,int state);

char *command[] = { "view","quit",(char *)NULL };

int done; /* When non-zero,this global means the user is done using this program. */

int main(int argc,char **argv)
{
    char *line;
    initialize_readline();  /* Bind our completer. */
    for ( ; done == 0; ) {
        line = readline("> ");

        if (!line) break;

        if (*line)
            execute_line(line);
        free(line);
    }
    return 0;
}

/* String to pass to system().  This is for the VIEW command. */
static char syscom[1024];
int execute_line(char *line)
{
    int i = 0;
    char *word;
    /* Isolate the command word. */
    while (line[i] && whitespace(line[i]))
        i++;
    word = line + i;

    while (line[i] && !whitespace(line[i])) i++;

    if (line[i]) line[i++] = '\0';

    if (strcmp(word,"quit") == 0) {
        done = 1;
        return 0;
    } else if (strcmp(word,"view")) {
        fprintf(stderr,"%s: Choose only \"view FILE\" or \"quit\" as your command.\n",word);
        return -1;
    }

    /* Get argument to command,if any. */
    while (whitespace(line[i])) i++;

    word = line + i;
    if(!word || !*word) {
        fprintf(stderr,"view: Argument required.\n");
        return -1;
    }
    sprintf(syscom,"more %s",word);
    return system(syscom);
}

static void display_matches(char** matches,int len,int max)
{
    int saved_point = rl_point;
    char *saved_line = rl_copy_text(0,rl_end);
    rl_save_prompt();
    rl_replace_line("",0); // Clear the prevIoUs text
    rl_display_match_list(matches,len,max);
    putp(cursor_up);
    rl_restore_prompt();
    rl_replace_line(saved_line,0);
    rl_point = saved_point;
    rl_redisplay();
    free(saved_line);
}

void initialize_readline()
{
    rl_readline_name = "rline";
    rl_attempted_completion_function = (rl_completion_func_t *)fileman_completion;
    rl_completion_display_matches_hook = display_matches;
    setupterm(NULL,1,(int*)0);
}

static char **fileman_completion(char *text,int end)
{
    if (start == 0)
        return rl_completion_matches(text,(rl_compentry_func_t *)*command_generator);
    return NULL;
}

static char *command_generator(char *text,int state)
{
    static int list_index,len = 0;
    char *name;
    if (!state) {
        list_index = 0;
        len = strlen(text);
    }
    if (len > 0)
        while ((name = command[list_index++]))
            if (strncmp(name,text,len) == 0)
                return strdup(name);
    return NULL;
}

我最初使用如下所示的Ajax标签帮助程序创建了表单，但由于现在能够停止表单重定向，因此不得不更改为在javascript中使用Ajax

$('#sendCodeForm').submit(function (e) {
            var form = $('sendCodeForm')[0]; 
            var formData = new FormData(form);                
            if ($(this).valid()) {
                e.preventDefault();
                $.ajax({
                    url: '@Url.Action("SendResetCode","Home")',type: 'post',cache: false,processData: false,contentType: false,data: formdata,success: function (data) {
                        if (data.status == "success") {
                            $("#successMessage").append('Reset code has been sent to');
                        }
                    }
                });
            }
        });

<form id="sendCodeForm">
    <label for="email">EMAIL ADDRESS</label>
    <input asp-for="username" id="username" type="email" placeholder="[e-mail]" /><br>
    <button type="submit" id="sendCodeBtn">Send Code</button>
</form>

解决方法

您可以尝试如下更改代码：

            $('#sendCodeForm').submit( function (e) {
                e.preventDefault();
                var formData = new FormData($('#sendCodeForm')[0]);              
                    $.ajax({
                        url: '@Url.Action("SendResetCode","Home")',type: 'post',cache: false,processData: false,contentType: false,data: formData,success: function (data) {
                            if (data.status == "success") {
                                $("#successMessage").append('Reset code has been sent to');
                            }
                        }
                    });               
            });

结果：