uni.request真机调试直接fail了求大神看看

uni.request({
url: 'http://192.168.2.24:8081/rt/user/login',
sslVerify: false,
method: 'POST',
header: {
'content-type': 'application/json;charset:utf-8'
// 'Accept': 'application/json'
},
dataType: 'json',
data: JSON.stringify({
'sCode': this.username,
'sPs': this.password
}),
success: (res) => {
// console.log(res.data.user)
// console.log(res.data)
if (res.data.code != 200) {
uni.showToast({
title: '登录失败',
icon: 'error',
duration: 3000
})
} else {
// 190018196106179239
uni.setStorageSync('user', res.data.user)
// console.log(uni.getStorageSync("permission"))
// console.log(uni.getStorageSync("user").sname)
uni.setStorageSync('permission', res.data.permission)
console.log(uni.getStorageSync("permission"))
uni.switchTab({
url: '/pages/matter/m_enter'
})
}
},
fail(res) {
console.log(res.errMsg)
}
})