在VSCode中调试F5，其.vscode/launch.json有特殊编写要求的，经测试以下方式可行。

"version": "0.2.0",
"configurations": [
{
"name": "Debug wopay",
"type": "go",
"request": "launch",
"mode": "debug",
"program": "${workspaceFolder}/src",
"cwd": "${workspaceFolder}",
"output": "${workspaceFolder}/wopay",
"showLog": true,
"trace": "verbose",
"buildFlags": "-o ${workspaceFolder}/wopay",
"env": {
"GOPATH": "${workspaceFolder}",
"GO111MODULE": "off"
}
},
{
"name": "Debug wopay (with modules)",
"type": "go",
"request": "launch",
"mode": "debug",
"program": "${workspaceFolder}/src",
"cwd": "${workspaceFolder}",
"output": "${workspaceFolder}/wopay",
"showLog": true,
"trace": "verbose",
"buildFlags": "-o ${workspaceFolder}/wopay"
}
]
}