axios使用参数里面，params这个值应该axios会自动把参数拼接到url query params吧！

let params:Url.URLSearchParams = new Url.URLSearchParams() 
params.append('ctl', 'sug') 
params.append('query', 'name') 
params.append('cfrom', '1099a') 
axios.post('http://10.xxx.xxx.234:3000/save?' + params.toString()).then(res => { 
  this.message = "request result: " + JSON.stringify(res.data); 
}).catch(err => { 
  this.message = "request error: " + err.message; 
})
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axios({ 
  url: 'http://xxx.xxx.xxx.234:3000/save', 
  method: 'post', 
  params: { 
    ctl: 'sug', 
    query: 'name', 
    cfrom: '1099a' 
  } 
}).then(res => { 
  this.message = "request result: " + JSON.stringify(res.data); 
}).catch(err => { 
  this.message = "request error: " + err.message; 
})
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