ajax 中文参数乱码问题不一定是编码格式问题。

代码要修改用户的信息，写了三个ajax，第一个写完测试没有问题，后面俩逻辑一样的就直接复制粘贴了。到第二个ajax测试的时候发现中文会乱码

如下

                        $.ajax({//中文参数乱码
                            url: '/editTeach/' + teacherId + '/' + userName + '/' + age + '/' + sex + '/' + dept + '/' + phone + '/' + professional,
                            type: 'post',
                            contentType: 'application/json;charset=utf-8',
                            dataType: 'text',
                            data: {
                                'teacherId': teacherId,
                                'userName': userName,
                                'age': age,
                                'sex': sex,
                                'dept': dept,
                                'phone': phone,
                                'professional': professional
                            },
                            success: function (res) {
                                if (res == "success") {
                                    layer.msg('提交成功');
                                } else {
                                    layer.msg("提交失败");
                                }
                            }
                        })

网上搜索试了好多解决方案都没用，后来发现后端接收少个sex参数。。。。。我的其他参数直接传到url乱码

    @RequestMapping("/editTeach/{teacherId}/{userName}/{age}/{dept}/{phone}/{professional}")
    @ResponseBody
    public String editTeach(@PathVariable("teacherId") int teacherId, @PathVariable("userName") String userName, @PathVariable("age") int age, @PathVariable("dept") String dept, @PathVariable("phone") String phone,  @PathVariable("sex") String sex,@PathVariable("professional") String professional) {
        int res = userService.updateTeacher(teacherId, userName, age, dept, phone, sex,professional);
        if (res > 0) {
            return "success";
        } else {
            return "fail";
        }
    }

ssm框架的json数据传输只要在mvc配置中配置如下配置就能解决乱码问题。

<mvc:annotation-driven>
    <!--解决jackson乱码问题-->
    <mvc:message-converters register-defaults="true">
        <bean class="org.springframework.http.converter.StringHttpMessageConverter">
            <constructor-arg value="UTF-8"/>
        </bean>
        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="objectMapper">
                <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                    <property name="failOnEmptyBeans" value="false"/>
                </bean>
            </property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>