Golang校验字符串是否JSON格式的方法总结

// Valid reports whether data is a valid JSON encoding.
func Valid(data []byte) bool {
	scan := newScanner()
	defer freeScanner(scan)
	return checkValid(data, scan) == nil
}

// checkValid verifies that data is valid JSON-encoded data.
// scan is passed in for use by checkValid to avoid an allocation.
func checkValid(data []byte, scan *scanner) error {
	scan.reset()
	for _, c := range data {
		scan.bytes++
		if scan.step(scan, c) == scanError {
			return scan.err
		}
	}
	if scan.eof() == scanError {
		return scan.err
	}
	return nil
}

s.step = stateBeginValue
s.parseState = s.parseState[0:0]
s.err = nil
s.endTop = false

package main

import (
	"fmt"
	"GitHub.com/luduoxin/json-validator-go/validator"
)

func main() {
	dataStr := `{"foo":"bar"}`
	res := validator.Valid([]byte(dataStr))
	fmt.Println(res)
}

package main

import (
	"fmt"
	"github.com/luduoxin/json-validator-go/validator"
)

func main() {
	var validTests = []struct {
		data string
		ok   bool
	}{
		{`foo`, false},
		{`}{`, false},
		{`{]`, false},
		{`123`, false},
		{`123.5`, false},
		{`0.5`, false},
		{`true`, false},
		{`false`, false},
		{`null`, false},
		{`[1,2,3]`, false},
		{`["a","b","c"]`, false},
		{`{"foo":bar}`, false},
		{`[{"foo":"bar"},]`, false},
		{`{}`, true},
		{`[]`, true},
		{`[{}]`, true},
		{`{"foo":"bar"}`, true},
		{`{"foo":"bar","bar":{"baz":["qux"]}}`, true},
		{`[{"a":"["c":"d"]"}]`, true},
		{`[{"a":[]}]`, true},
		{` {"a":"b"}`, true},
		{` {"a":"b"} `, true},
		{`{"a":"b"} `, true},
		{`{"a": "b"} `, true},
	}

	for _, tt := range validTests {
		if ok := validator.Valid([]byte(tt.data)); ok != tt.ok {
			fmt.Println("not pass")
		}
	}
}